Kenda Karrier S-Trail ST145/R12 Radial Tire w/ 12" Galvanized Spoke Wheel - 5 on 4-1/2 - LR D

Kenda Karrier S-Trail ST145/R12 Radial Tire w/ 12" Galvanized Spoke Wheel - 5 on 4-1/2 - LR D

Item # AM31202

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AM31202 - 12 Inch Kenda Tires and Wheels
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  • Tire with Wheel
  • 12 Inch
  • 5 on 4-1/2 Inch
  • 145/80-12
  • Load Range D
  • Steel Wheels - Galvanized
  • Boat Trailer Wheels
  • Radial Tire
  • Kenda
  • Good Rust Resistance
Radial tire with automotive-grade tread has an 8-ply rating and a 1,220-lb max load at 65 psi. 12" x 4" Steel wheel has a 5 on 4-1/2 bolt pattern and a corrosion-resistant galvanized finish. Beveled stud holes keep wheel secure. Lowest Prices for the best tires and wheels from Kenda. Kenda Karrier S-Trail ST145/R12 Radial Tire w/ 12" Galvanized Spoke Wheel - 5 on 4-1/2 - LR D part number AM31202 can be ordered online at etrailer.com or call 800-298-8924 for expert service.


  • All Info
  • Reviews (437)
  • Q & A (35)
  • Videos (1)
  • Photos
  • Why etrailer?

Kenda Tires and Wheels - AM31202

Radial tire with automotive-grade tread has an 8-ply rating and a 1,220-lb max load at 65 psi. 12" x 4" Steel wheel has a 5 on 4-1/2 bolt pattern and a corrosion-resistant galvanized finish. Beveled stud holes keep wheel secure.


Features:

  • Tire-and-wheel assembly is ideal for boat trailers, stock trailers, utility trailers, and campers
  • Sturdy steel wheel with 8-spoke design
    • Galvanized finish provides superior protection from rust and corrosion
  • Beveled stud holes help to keep wheel securely in place on trailer hub
    • Eliminate the need for constant retightening of lug nuts
  • Karrier S-Trail radial tire
    • Double steel belts and full nylon plies combine for superior function and long life
    • Premium rubber compound materials help disperse heat
    • Radial ply tire is great for highway use
  • Automotive-grade, computer-generated tread has sipes that channel water away from the tire to improve traction during wet, snowy, or icy conditions
  • Special trailer (ST) tire has sturdy sidewalls so that it can handle heavy loads
    • Created specifically for trailers and not intended for use on other vehicles
  • Assembly meets DOT specifications


Specs:

  • Rim dimensions: 12" diameter x 4" wide
  • Bolt pattern: 5 on 4-1/2"
  • Wheel bolt size: 1/2"-20
  • Wheel capacity: 1,250 lbs
  • Pilot diameter: 3.19"
  • Offset: 0
  • Tire size: ST145/R12
    • Section width: 5.7"
    • Outer diameter: 21.3"
  • Tire capacity:
    • Load range: D
    • Ply rating: 8
    • Maximum load: 1,220 lbs at 65 psi
  • Tread depth: 7/32"
  • Maximum speed: 65 mph
  • 2-Year limited warranty


Karrier S-Trail Radials with Automotive-Grade Tread

Kenda Karrier S-Trail Tread Vs Standard Tread

Unlike standard trailer tire tread, which has solid, continuous ribs, the automotive-grade, computer-generated tread on these Karrier S-Trail radials has ribs with breaks. These breaks allow water to run off to the sides. The Karrier S-Trail tread also has sipes. Siping is a process in which thin grooves (or sipes) are cut into the rubber of the tire. The grooves channel water away from the tread so that the tire makes better contact with the road. Both of these features greatly improve traction during wet, snowy, or icy conditions.


Karrier S-Trail radials are constructed with double steel belts and full nylon plies for increased durability and endurance. The premium rubber compound materials of this tire help disperse heat.


Beveled Stud Holes

Beveled Stud Holes Front and Back

The stud holes on this steel wheel are beveled to ensure that the wheel stays tight against your trailer hub. This also eliminates the need to constantly retorque the lug nuts.


Radial Tires vs. Bias Ply Tires

The cords on this radial ply tire are positioned at a 90-degree angle to the direction of travel so that they lay across the width of the tire from wheel lip to wheel lip. This construction prevents the cords from rubbing against one another when the tire flexes, unlike the cords on a bias ply tire. As a result, radial tires have less rolling resistance, which leads to a longer tread life and improved steering.


Determining the Bolt Pattern

The first number in the bolt pattern is the number of bolt holes. The second number denotes the diameter, in inches, of the circle on which the bolt holes sit.


Bolt Pattern - Odd

To determine the bolt-circle diameter on wheels with an odd number of bolt holes, measure from the center of any bolt hole to the point halfway between the two bolt holes directly across from the first. (Example: "5 on 4-1/2" means 5 bolt holes with 4-1/2" measured to a point halfway between the opposite bolt holes.)


Bolt Pattern - Even

On wheels with an even number of bolt holes, measure from the center of one bolt hole to the center of the hole directly across from it. (Example: "8 on 6-1/2" means 8 bolt holes with 6-1/2" from the center of one hole to the center of another on the opposite side.)


Bolt Pattern - Side

Measuring the distance from the center of one bolt hole on the wheel to the center of a bolt hole right next to it can also help to determine the bolt pattern.

  • If D = 2-5/8", then the bolt pattern is 5 on 4-1/2"
  • If D = 2-3/4", then the bolt pattern is 5 on 4-3/4"
  • If D = 3", then the bolt pattern is 5 on 5"
  • If D = 3-1/4", then the bolt pattern is 5 on 5-1/2"


31202 Kenda Karrier KR25 S-Trail ST145/R12 Radial Tire with 12" Galvanized 8-Spoke Rim - 5 on 4.5 - Load Range D







Video of Kenda Karrier S-Trail ST145/R12 Radial Tire w/ 12" Galvanized Spoke Wheel - 5 on 4-1/2 - LR D


Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Kenda Tires and Wheels - Tire with Wheel - AM31202 Review


Customer Reviews

Kenda Karrier S-Trail ST145/R12 Radial Tire w/ 12" Galvanized Spoke Wheel - 5 on 4-1/2 - LR D - AM31202

Average Customer Rating:  4.8 out of 5 stars   (437 Customer Reviews)

Radial tire with automotive-grade tread has an 8-ply rating and a 1,220-lb max load at 65 psi. 12" x 4" Steel wheel has a 5 on 4-1/2 bolt pattern and a corrosion-resistant galvanized finish. Beveled stud holes keep wheel secure.

- AM31202
by:

The tires were delivered in two days. I decided to have the balance checked before installation. One was ok but the other one needed balancing. Always had good experiences with trailer. 658685



- AM31202
by:

Good tire for the money. 523471



- AM31202
by:

I am very pleased with the speed that the wheels and tires were shipped to me. The quality is exactly what was described. I’m looking forward to installing them on my trailer. My only complaint is that one of the wheel and tire combo looked like it had been sitting around a while and the other looks like it was just assembled. There is no difference in quality just appearance. I’m still very pleased. 554236



- AM31202
by:

Just got them put on but I can tell already this is a great improvement to my trailer. Check out the before and after pictures. 434166



- AM31202
by:

Was told theses were eight ply tires when in fact there 5 ply when I called with concern they looked up info and made calls to find out there load rated same as eight ply tires 514922


Comments

Years ago, tires were indeed rated by the number of layers or plies used in their construction. Due to advances in tire construction over the years, a tire thats actually constructed of two plies can have the same load rating as an 8 ply tire. Another advantage- having fewer, but stronger plies helps the tire shed heat more quickly. This is huge, as excess heat is the number one reason for tire failure.

-- Mike L - 06/01/2018

39130

- AM31202
by:

I'm glad to see I have an option to garbage bias ply 4.80x12 trailer tires. I've tried a lot of them over the years and always the same result, poor quality, ride, and terrible tread life. My last set of bias plys on a 2 ski pwc trailer were already down to the wear bars in a year and maybe 1000-1200 miles. Ordered these galvanized wheels and kenda radials and as always etrailer got them here very fast and well packed. Took them to my local tire guy and he balanced them. Didn't take much weight and watching them spin showed a straight rim and tire. Installed them and was shocked the first trip to the river. Zero vibration from the trailer! Bias plies seem to bounce and transfer it to my truck through the hitch. These tires are smooth, no trailer bounce, pull great, and I don't see my yamahas vibrating in the rear view mirror. Fast forward a few months till now. I probably have 5-600 miles on them. Still perfect, zero air loss, zero tread wear noted. I will buy these from now on based on what I'm seeing so far. 380506



- AM31202
by:

Wheel and tire assembly was received packaged in a sturdy box. Nice shipping! These assemblies are going on a 2002 Carni trailer purpose built for a Hobie Cat so the tires will not be overloaded. However, we tow to Baja Mexico and back each year, about 5000 miles (8000kms) round trip. Galvanizing on the wheel looks well done and all surfaces are coated. Tire valve stem is a standard automotive rubber stem and I would have preferred a high-pressure stem with metal insert, to better handle the 65PSI pressure. I will replace this later. I ordered two wheel and tire assemblies; one wheel is perfectly round and true, but the other wheel has about 3/16" wobble from side to side which may give problems later. I notice that other buyers have had the same problem here. It would have been nice if they were checked before shipping. The tire looks good and has a wide, fairly flat tread that should give good wear characteristics. The last tires I had on this trailer were USA built Carlisle load rage D tires that started to come apart after only one year's use but about 5000 miles. I've got my fingers crossed! 438561



- AM31202
by:

Fantastic price, great selection, and free shipping to boot. I needed new tires for a long ATV trip and wanted a spare tire as well (I know, I know, but I usually only trailer locally). I ordered these radial tires and rims pre-mounted which allowed me to use one of the old wheels as my spare. Everything performed flawlessly over about 600 miles and even held their torque specs when I checked them during and after the trip. The spare tire carrier compliments the galvanized trailer frame and rims and looks like it will hold up to the elements of the North East. All in all, I highly recommend these products and etrailer. 451686



- AM31202
by:

Excellent - fast shipping and nicely pa ckaged 666502



- AM31202
by:

I could highly recommend the product and the delivery to anyone as they are in excellent quality, I pulled my trailer from Florida to Arizona with these 2 new wheels without a single issue and the tires are still in the same condition. 664110



- AM31202
by:

Wheels arrived timely. Thank God the bolt pattern was right. (Videos really helped ---but still there is doubt without a template) Now to wear out the tires fishing. 663932



- AM31202
by:

The tire/rim combination was exactly what I needed. I have refurbished a small 4 x 10 trailer and wanted to put better tires on so I went with the Loadstar radials. The tech support at etrailer was excellent and I was very please to receive a set of tires that are perfect for the trailer. I searched elsewhere and other online sources and when factoring in the free shipping, etrailer was the best price I found. Thanks for the help, etrailer. You guys did great and I’m very happy with my new tires and rims. 662445



- AM31202
by:

etrailer continues to deliver exceptional service every time, and I’ve been a satisfied customer for many years now. I wouldn’t think of going anywhere else. AAA+++ 659254



- AM31202
by:

Tires arrived quickly as advertised. the tracking on UPS was extremely helpful. these LR D tires are the real deal and a substantial upgrade from the run of the mile LR B - C series. Don't waste time and money getting inferior tires and having your trailer site on the side of the road or worse. Go with these radials if you are ditching the 4.80 - 12's. Nice job, e-trialer, on the free shipping and customer service. 657706



- AM31202
by:

Your website taught me a lot about what I needed in a trailer tire. Fast delivery and nice looking tires. 656143



- AM31202
by:

Excellent tire/wheel assembly. 655436



- AM31202
by:

Great look and quality! 655109



- AM31202
by:

George, from etrailer, just emailed me and asked if I would offer a review of the AM31202 galvanized rim and tire after 1 year of use. Sure, George, you seem like a nice guy, I'd be happy to give you my thoughts: I have very little complaint. So far so good after a year. I have yet to lose any air and they ride smoothly down the road. I do carpentry during the summer months, hauling all kinds of stuff all of the place, and they have not let me down yet. The galvanized coating is a bit rough, but as long as the rims don't rust, I guess it doesn't really matter. Well, that's my review! 654756



- AM31202
by:

So far, so good. Time will tell how they wear. Did not need much balance weight at a local tire shop. Hope they wear and last better than the non-radial 5.30/12 that they replaced on a light boat trailer. Great service, price, and quick delivery. 650542



- AM31202
by:

Purchased a pair of this tire and wheel combo to make my little boat trailer more road worthy at highway speeds. These 8 ply radials on galvanized wheels is perfect for my application. Just check air pressure, lube the bearings and go. No more worries of light duty bias ply tire failure because of longer distances at highway speed. Found etrailer to have the best product for the best price. Order arrived quickly. Pulled these from the shipping box and bolted them on the trailer. No extra trip or cost getting tires mounted on wheels. 649638



- AM31202
by:

Exactly what I ordered and they shipped it in 3 days which I didn't even opt for. I chose UPS ground and they upped it to 3 day shipping for free. Came packaged well and is in great shape. 645123



- AM31202
by:

Purchased two of these radial tires to replace the original bias ply tires on my 2004 450LHD Snowbear utility trailer (GVWR 2090 LB). I can't really complain about the life of the OEM tires, as I had about 30K miles on them hauling stuff from place to place. They were at the point where I needed to replace them. I have purchased several other things from etrailer and have been very satisfied and comfortable with the quality of the items they sell. Upon installing these tires ... wow... what a night and day difference the radials make. I used to have a annoying trailer shimmy at exactly 40MPH. Faster or slower was fine with some variation based on load. Towing empty was the worst. Now the trailer tows smooth as silk at any speed / load. I have about 3k miles towing on these new tires with no complaint what so ever. I live in the northeast and keep my trailer garaged when not in use and repack the wheel bearings every 3k miles or so. I expect these new tires will last a very long time. 644538



- AM31202
by:

Good product. Prompt Delivery. Would buy again. 639057



- AM31202
by:

Very satisfied with upgrade to radial tires. I did take them to tire shop to have them balanced. 637719



- AM31202
by:

The tires work well, I have put at least 7000 miles on them. I would recommend balancing the tires before install. 636390



- AM31202
by:

Galvanized wheel looks good. Good fit. Had wheels balanced at a tire shop. Much quieter than original tires. Tracks well. Good value purchase, Highly recommended. 636326



- AM31202
by:

I needed a larger wheel and tire for my pontoon boat trailer and found the perfect size at etrailer. they shipped fast and the quality and price was great. I have had them for a year now and I am very pleased .I will definitly buy more tires from etrailer. 633586



- AM31202
by:

Tires look fine. I wont know until hopefully thousands of miles down the road if they are still worthy of 4 star rating. 613763



- AM31202
by:

Tires look great, no flaws in the galvanized wheels. 606213



- AM31202
by:

Was a great move to go from bias-ply tires to radial. Trailer pulls so much better with less bounce. I had tires balanced before putting them on trailer, but they were already so close to perfect balance that it probably wasn’t necessary. Galvanized rims look great. Will never do the rust-prone painted rims again. Great price for a great product. 601264



- AM31202
by:

Great tire and great price! 599601



- AM31202
by:

great product, and super fast delivery. very well boxed, as always, thanks 582626



- AM31202
by:

Delivered earlier than promised. Looks great!! 582286



- AM31202
by:

Great tires. Drove from Wyoming to Florida keys and back. No problems. In the past I used bias ties and got too many blow outs 563066



- AM31202
by:

Wheels and tires look great! One of the two sent to me was out of round/bent wheel but the team was very helpful and quick to send a replacement. Can’t attest to how well the tire will hold up yet, but based on the positive customer service I would purchase again. 559981



- AM31202
by:

The wheels are exactly what I ordered and the radial tire should help them run cooler at highway speeds. Thanks! 559930



- AM31202
by:

Tires arrived 3 days early. Exactly what I ordered. Vast improvement over original tires. 559344



- AM31202
by:

I received galvanized wheels and tires as an upgrade for a very old boat trailer. The new larger radial tires on 12” rims are a great upgrade from the old non-radial tires on 8” rims. Tows smooth and easy on the highway with noticeably less trailer bang & hop on rougher roads at slower speeds. Super easy, super fast delivery. Awesome, thank you. 548789



- AM31202
by:

High quality product at a great price. Mounted new tires and wheels on all 3 of my trailers. 546409



- AM31202
by:

Great looking product. Great price. Very impressed 544863



- AM31202
by:

Bolted on went 300 miles,no problems. 542192



- AM31202
by:

received in a timely manner, as usual. Thanks. 527876



- AM31202
by:

Easy online order, quick delivery, and product delivered was exactly as advertised. Tires were inflated but I adjusted pressure to my needs, installed them in about 30 minutes, and was ready to go. I put 160 miles on my trailer this weekend, and tires worked great, smooth ride, and very good pull. I would use etrailer.com again when the need arises. 526596



- AM31202
by:

Excellent service, delivered boxed and in good condition exactly as described. Thank you 525274



- AM31202
by:

I bought these to replace the original bias ply tires and rims that came on my discount hardware store bought trailer that I built into a teardrop. These Radials are so much nicer than the bias ply 5.30 x 12 that they replaced. They roll really easy and smooth out the bumps very well. Huge difference in how quiet the trailer is behind the car and they have smoothed out the bouncing and banging I used to have. The galvanizing on the rims also looks nice on my silver teardrop. 523489



- AM31202
by:

Nice tires! I love them! To bad the price dropped on the site after I bought mine as a matter of fact they was cheaper the following day not by much but every penny matters these days 514645



- AM31202
by:

Product delivered quickly. Very helpful customer service department. 514345



- AM31202
by:

Product arrived on time and in excellent condition. Looking foward to many carefree miles on my delivery trailer. 512151



- AM31202
by:

The service and communication from etrailer was outstanding. I appreciated the free shipping. The ability to track my shipment during transport kept me informed every step of the way. My entire experience could not have been better. GREAT JOB! 505031



- AM31202
by:

I purchased 3 of these tires to replace the 2 originals that came with my 4 x 8 utility trailer and provide me with a spare that I did not have before. These new tires are of a much higher quality allowing me to travel much faster on the highway and to carry more weight. I have been very pleased with these tires and highly recommend them. 502521


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Ask the Experts about this Kenda Tires and Wheels
Do you have a question about this Tires and Wheel?


  • Can a Load Range C Tire Replace a Load Range B Tire
  • The Kenda 4.80-12 Bias Trailer Tire # AM30660 that has the 12" white wheel will work just fine for your boat trailer needs. This combination does have the 5 on 4-1/2" bolt hole pattern and comes in a load range C (990 lbs at 90 psi). You can use a tire with a lower weight rating as long as you are not overloading the tire. This is one of the bigger reasons for blowouts. Although it does cost more, I recommend going with the Kenda Karrier S-Trail ST145/R12 Radial Tire # AM31202 instead....
    view full answer...

  • Speed Rating of Kenda Karrier S-Trail Tire ST145/R12
  • The Kenda Karrier S-Trail ST145/R12 Radial Tire # AM10130 (load range D) and # AM10140 (load range E) both have a speed rating of 65 mph. These tires can also be found as a combination with wheels, such as the # AM31202 with 12" galvanized spoke wheels and a 5 on 4-1/2 bolt pattern, as well as the # AM35351DX, which is a 12" white spoke wheel with a 4 on 4 bolt pattern. I have attached a link to our page with each of our Kenda Karrier S-Trail tire and wheel combinations with a tire...
    view full answer...

  • How to Select Size, Load Rating and Speed Rating for Special Trailer Tires on Pontoon Boat Trailer
  • 12-inch trailer tires are in much wider use than 10-inch tires but the tire size in itself is not really what matters, apart from them fitting properly inside the fenders or wheel wells. What is most important in selecting trailer wheels/tires is having ones with the appropriate weight load range rating for the actual loaded weight of the trailer with the boat, and having tires that are rated for your typical driving speed. Some trailer tires are rated only to 65-mph but others can be rated...
    view full answer...

  • Best 12 Inch Galvanized Tires and Rims for Small Boat Trailer
  • A radial tire flexes more than a bias tire, giving it better ground contact, traction, stability, and tread wear. Radial tires generally run cooler than bias tires, which usually leads to a longer life for radials. I would recommend going with a radial tire if possible, but provided you heed limits such as load range and psi, a bias tire will also work. We currently offer three different tire sizes that have 12 inch diameters and galvanized 5-lug rims. You can check your current tires to...
    view full answer...

  • Recommended Wheel For Trailer W/12 inch x 4 inch 5 on 4-1/2 Bolt Pattern
  • Since we do not carry any radial tires that are size 5.30-12, the next closest option is a 145/80-12 sized tire. The new tire is about 1/2 inch smaller so it will work great for you. Radial tires are a good choice because they flex more than a bias tire which gives better ground contact, traction, stability, and tread wear. Radial tires generally run cooler than bias tires as well which usually leads to a longer tire life. With your wheel size, you have several options. I recommend the...
    view full answer...

  • Recommended Tire and Wheel to Replace 6.90-9 Tires on Trailer
  • For just a replacement tire, we do have the Kenda Loadstar K364 Trailer Tire # AM10040. This 6.90/6.00-9 size tire will be the exact same size as what you currently have mounted, however we do not currently carry the 9 inch wheels that these will fit. I recommend upgrading just a bit in tire size so that you can use a wheel size that is more readily available. Your existing 6.90-9 tires have an overall diameter of 21.1 inches. The closest wheel and tire size we have to that is the 145/80-12...
    view full answer...

  • Tire Recommendation for Trailer with Tire Size 145R12
  • We have the tire size 145R12 by itself. For that you would want the part # AM10140. I attached a review video for this tire for you to check out as well. If you happened to need it on a rim with a 5 on 4-1/2 inch bolt pattern you'd want the part # AM31202 or for a 4 lug solution part # AM35351DX.
    view full answer...

  • Kenda Karrier S-Trail ST155/R12 Compatibility With 12x4.5 Inch Wheel
  • I reached out to the manufacturer and the Kenda Karrier S-Trail ST145/R12 Radial Trailer Tire - Load Range E # AM10140 will fit a 4.5 inch wide rim, however it may change the load capacity as the tire may be stronger than the wheel. If you have a heavy load you are carrying, you may want to have a 12x4 inch rim. We do have some pre-mounted options for that tire: Kenda Karrier S-Trail ST145/R12 Radial Tire w/ 12" Aluminum Wheel - 5 on 4-1/2 - Load Range E # AM31215 Kenda Karrier...
    view full answer...

  • Does Kenda Wheel and Tire part # AM31202 Come Machine Balanced
  • The tire and wheel combos we carry like the part # AM31202 you referenced are not machined balanced. You can have the tire and wheel combos balanced at a local tire shop if you wanted to. What some manufacturers will do is line up the light spot on the tire with the heavy spot on the wheel. This is a type of balancing but not like how car tires are balanced (with weights on a balancing machine). In nearly all situations this balancing process is more than adequate.
    view full answer...

  • Will Trailer Tire Size 145R12 Replace 5.3x12
  • Your current tire size of 5.3-12 would easily be replaceable by a tire size ST145R12 like the # AM31202 the sizes are actually very similar so it would be an easy transition. Based on the dimensions you listed you have the very common 5 on 4-1/2 inch bolt pattern which is what this wheel has.
    view full answer...

  • Replacement Rim and Tire Solution for Size 6.90-9
  • We don't carry that rim size. We have a tire size that matches, but not a rim. Your tire size has an overall diameter of 21.1 inches. The closest wheel and tire size we have to that is the 145/80-12 which has a diameter of 21.3 inches. For that size on a rim with a 5 on 4-1/2 inch bolt pattern we have the # AM31202 which would work well.
    view full answer...

  • Recommended Replacement Tires For 205/80D10 Tires And Radial Option
  • If you will not be towing over 65 mph, then you can go with the Kenda Loadstar K399 Bias Trailer Tire - 205/65-10 - Load Range D # AM1HP54 and you will be fine. It is true that radial tires run cooler so if you will be doing a lot of highway driving, then it would be wise to move up to a radial and the smallest does require a 12 inch wheel. All of our 12 inch radial tires still have a max speed rating of 65 mph but will run cooler and have better traction on the highway. I recommend...
    view full answer...

  • Recommended Trailer Hub Assemblies to Replace Wheels with Integrated Hubs
  • Thanks for the picture. It looks like you have a spindle welded onto a frame and you just need the hub assembly. If this is like most small snowmobile trailers, then you most likely have a 1 inch straight spindle. If this is the case, I recommend the Trailer Idler Hub Assembly for 2,000-lb Axles - 8" to 12" Wheels - 5 on 4-1/2 # AKIHUB-545-2-1K. This would allow you to use standard wheels like the Kenda Karrier S-Trail ST145/R12 Radial Tire w/ 12" Galvanized Spoke Wheel - 5 on 4-1/2...
    view full answer...

  • Troubleshooting Tire Blowouts on Jayco Pop-Up Camper
  • Blowing tires frequently is unsafe but there are steps you can take that should prevent blowouts with the volume you are experiencing. When a tire blows out it is because of overheating and that generally happens for a few reasons - they are overloaded and do not have a high enough load rating for the weight of the camper, they are being driven faster than their speed rating or they are not inflated properly. Special trailer tires ("ST") must be inflated to their max psi in order to get...
    view full answer...

  • Converting Single Axle Trailer to Double Axle
  • To convert your single axle trailer to a double axle, you will want to start with some basic measuring. Then you will want to determine if you will be we matching your current axle or replacing it. If you are matching your current axle, you will need to get the spring seat to spring seat dimensions and the hub face to hub face dimensions and I can assist from there. The easiest option is to replace your axle and use the Timbren Axle-Less Trailer Suspension System with Hubs - 5 on 4-1/2...
    view full answer...

  • Replacement P155/80B12 Tires for Boat Trailer
  • For starters, the tires you have now are not correct for a boat trailer. The "P" stands for passenger which means they are designed for passenger vehicles whereas you need "ST" which stands for special trailer because they have the needed sidewall capacity for a trailer. For replacement, the Kenda Karrier S-Trail ST145/R12 Radial Trailer Tire part # AM10130 will do a great job of this and it will be an upgrade because they have a radial ply which means they will be much better for highway...
    view full answer...

  • Should Trailer Tires all Have the Same Load Range
  • You really want to make sure the tires all match in all regards on your trailer to ensure you have the safest and smoothest ride quality. Could you get home on a spare that has a different Load Range? I am sure you could without issue, but I'd only go that route in the event of an emergency. I attached a help article on trailer tires for more info for you to check out as well.
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  • Recommendation For Radial Trailer W/12 Inch Solid Wheel With A 5 x 4.5 Bolt Pattern
  • At this time, we do not carry solid wheels in 12 inch rims. However, I do recommend the Kenda Karrier S-Trail ST145/R12 Radial Trailer Tire w/12 inch Galvanized Wheel Item # AM31202 as a possible option. It is a special trailer tire with automotive-grade tread with a maximum capacity of 1,220-lb at 65 psi. It is a 12 inch x 4 inch steel wheel that fits a 5 on 4-1/2 bolt pattern. It has a maximum speed capacity of 65 mph. If you just need a tire, I recommend the Kenda Karrier S-Trail...
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  • Do Trailer Tire and Wheel Combinations Need to be Balanced
  • The tire and wheel combinations that we have available, such as the Kenda Karrier S-Trail ST145/R12 Radial Tire w/ 12 Inch Wheel # AM31202, are mounted so that the high heavy spot on the tire is aligned with the low light spot on the wheel. While this is different than how car tires are balanced (with weights on a balancing machine), it does provide sufficient balance for trailer tires. While it is not necessary, you can certainly still have the tire and wheel combos balanced at a local...
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  • Adding Rim and Tire to Coleman Versa Trailer
  • In order to get a rim and tire with the proper fit, you first need to know your wheel's bolt pattern. If you take a look at the help article on determining wheel bolt pattern I've attached it will explain how you can find that. For a 10 or 12 inch wheel, the bolt patterns we have will be 4 on 4 inch, 5 on 4-1/2 inch and 5 on 5-1/2 inch. For example, the Kenda Karrier S-Trail ST145/R12 Radial Tire w/ 12" Galvanized Spoke Wheel # AM31202 has a 12" x 4" wheel with a 5 on 4-1/2 inch bolt pattern,...
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  • Is the Kenda 4.80-12 Bias Trailer Tire with 12" White Wheel # AM30660 a Load Star Tire
  • The Kenda 4.80-12 Bias Trailer Tire with 12" White Wheel # AM30660 that you received is known as their "Load Star" tire. It is just the name of that specific tire from Kenda. For example, the Karrier S-Trail # AM31202 is another tire from Kenda, the "Karrier S-Trail" is just the specific name of that tire. If you check out the attached picture (taken from the product page) you can see that this Kenda tire is labeled as the Load Star.
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  • Can Trailer Wheel be Replaced with Wheel that Has Larger Pilot Diameter
  • Yes, you can go with a wheel and tire that has a larger pilot diameter like the part # AM31202 which has a pilot diameter of 3.19 inch. As long as your current wheel is held on with lug nuts and not lug bolts you can use a wheel with a larger pilot diameter as the wheel centers on the lugs. If you have wheel bolts instead you'd have to match the pilot diameter exactly since the wheel centers on that.
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  • Will the Kenda Karrier S-Trail ST145/R12 # AM31202 Fit on a 10 inch Hub with Electric Brakes
  • If you have a 10 inch electric brake system on your trailer then you will need to go with a tire/wheel combination that uses a 13, 14, 14-1/2, or 15 inch wheel. A 12 inch wheel, like what comes on part # AM31202 that you referenced, is compatible with 7 inch brake assemblies and the hubs that fit them. For your application you will want to go with the Karrier ST175/80R13 Radial Trailer Tire # AM31994 instead. It utilizes the same 5 on 4-1/2 inch bolt pattern, has a load range of D (1,610...
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  • Best 12-Inch Trailer Tires for Pop-Up Camper Trailer
  • The overall diameter of a mounted and inflated tire in size 5.30-12 such as # AM30780 will be 21.9-inches. The tire size 145/80-12 such as # AM31202 is just slightly smaller in overall diameter at 21.3-inches. In each of these tire sizes we offer several weight load ranges; I linked a page for all tire and wheel/tire products for each of the two sizes you referenced. Ideally you will select tires with a Load Range that provides some safety margin based on the trailer's GVWR. Trailer...
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  • 145/R12 Tire and Wheel With 5 on 4-1/2" Bolt Pattern
  • We have exactly what you need depending on the load range for your camper; the Kenda Karrier S-Trail ST145/R12 Radial Tire w/ 12" Galvanized Spoke Wheel - 5 on 4-1/2 # AM31202 which is a load range D tire with a maximum load of 1,220 lbs at 65 psi. For a load range E tire with a maximum load of 1,520 lbs at 80 psi there is the Kenda Karrier S-Trail # AM31215 which is otherwise the same in terms of tire size, wheel size and wheel bolt pattern. The tires and wheels we carry do not need...
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  • Can A Smaller Tire Be Put On My Trailer To Lower It
  • Yes, you are able to put a smaller tire on the trailer to lower it, however there are a few things that you want to consider when choosing a smaller tire. According to my research the standard tires that are on your trailer are ST175/80R 13LRC tires with a 1360 pound capacity. It also has a 2200 pound rubber torsion axle with no brakes. This type of setup has either wheels with a 4 on 4 Inch # AM3S120 or a 5 on 4-1/2 Inch bolt pattern # AM31994. This is something to consider when choosing...
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  • Can 10 in Trailer Wheels and Tires be Upgraded to 12 inch Wheels and Tires
  • If you have the additional needed fender clearance then yes you could go to a larger tire and wheel size. Do you know what bolt pattern you need? If you have a 5 on 4-1/2 inch bolt pattern the part # AM31202 would work. Or if you have a 4 on 4 inch bolt pattern the part # AM35351DX would fit. The overall diameter of the tire is 21.3 inches. You would need to compare that to your available room.
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  • Can 8 inch Trailer Wheel and Tire be Upgraded to 12 inch
  • If you have enough wheel well clearance, I would look into a 12 inch radial tire and wheel like the Kenda Karrier ST145/R12 S-Trail Tire, # AM31202 for a 5 lug bolt pattern or # AM35351DX for 4 bolt. All of the 4.8-12 tires are bias ply tires, but the S-Trail is a radial tire. Radial tires have more flex which gives it better ground contact, traction, stability and tread wear. It will also run cooler which helps the tire last longer. This tire is also about 1 inch wider, so it will help...
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  • Can Single Axle Pontoon Boat Trailer be Converted to 2 Timbren Axle-Less Systems
  • If you go to 2 Timbren Axle-Less systems then there isn't a whole lot of instruction required. You just have to bolt them onto the trailer frame in the right spots. To figure out the right spots though there is a little math involved. I have included a picture that shows what you will need to do to figure out placement. Pontoon boat trailers generally have very short but wide tires which allows the boat to sit lower and thus makes it easier to launch the boat. If you go to a larger size...
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  • Replacement Tire and Wheel for 155r13 Tire and Rim for Boat Trailer
  • The 155R13 tire size is not very common anymore. The Taskmaster Provider ST175/80R13 Radial Tire w/ 13" Steel Mod Wheel - 5 on 4-1/2 - LR C - Silver PVD Finish # A13RSMPVD is my recommendation for a replacement which is a larger tire, so I'll give some dimensions to assist. This tire will be 6.97 inches wide and 24.02 in diameter. It is rated for 1,360 lbs at 50 psi and speeds up to 81 mph. It has PVD (physical vapor deposition) coated wheels for corrosion prevention which bonds on...
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Info for this part was:

Edited by:
Leah B
Installed by:
Jeff D
Expert Research:
Jameson C
Written by:
Mary E
Photos by:
Jeffrey L
Updated by:
Isabelle B

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