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Karrier ST175/80R13 Radial Trailer Tire with 13" White Wheel - 5 on 4-1/2 - Load Range D

Karrier ST175/80R13 Radial Trailer Tire with 13" White Wheel - 5 on 4-1/2 - Load Range D

Item # AM31985
Our Price: $146.60
Trailer Tires and Wheels
This item qualifies for Free Shipping
Shipping Weight: 32 lbs
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AM31985 - 175/80-13 Kenda Trailer Tires and Wheels
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Radial tire has a ply rating of 8 and a 1,650-lb maximum load at 70 psi. The 13" diameter x 4-1/2" wide steel trailer wheel features a 5 on 4-1/2 bolt pattern and a corrosion-resistant powder coat finish. Great Prices for the best trailer tires and wheels from Kenda. Karrier ST175/80R13 Radial Trailer Tire with 13" White Wheel - 5 on 4-1/2 - Load Range D part number AM31985 can be ordered online at or call 1-800-940-8924 for expert service.
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Kenda Trailer Tires and Wheels - AM31985

  • Tire with Wheel
  • 13 Inch
  • 5 on 4-1/2 Inch
  • 175/80-13
  • Load Range D
  • Steel Wheels - Powder Coat
  • Radial Tire
  • M - 81 mph
  • Kenda

Radial tire has a ply rating of 8 and a 1,650-lb maximum load at 70 psi. The 13" diameter x 4-1/2" wide steel trailer wheel features a 5 on 4-1/2 bolt pattern and a corrosion-resistant powder coat finish.


  • Kenda Karrier special trailer radial tire
    • Special trailer tire design
      • Couples the strength of a bias tire with the durability and stability of a radial tire
      • Created specifically for trailers and not intended for use on other vehicles
    • Double steel belts and full nylon plies combine for superior function and long life
    • Computer-generated tread design and premium rubber-compound materials
      • Superior traction in wet or dry conditions
  • Steel wheel has 8-spoke design
    • Resists rust with e-coat and white powder coat finishes
  • Tire-and-wheel assembly meets Department of Transportation specifications


  • Rim dimensions: 13" diameter x 4-1/2" wide
  • Bolt pattern: 5 on 4-1/2"
  • Wheel capacity: 1,660 lbs
  • Wheel bolt size: 1/2"-20
  • Offset: 0
  • Pilot diameter: 3.19"
  • Tire size: ST175/80R13
    • Section width: 7"
    • Outer diameter (when inflated): 24.1"
  • Tire capacity:
    • Load range: D
    • Ply rating: 8
    • Maximum load: 1,650 lbs at 70 psi
  • Maximum speed: 81 mph (speed rating M)
  • Warranty:
    • 5-Year on tire
    • Limited 1-year on wheel

1-Year Worry-Free Guarantee

This tire has a 1-year worry-free guarantee. If within the first 12 months the tire is damaged in any way, it will be replaced at no charge.

Radial Tires vs. Bias Tires

Radial tire vs bias tire graphic

Radial ply tires are designed for trailers that are towed on the highway. The cords on a radial 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 and heat buildup, which leads to a longer tread life and improved steering at higher speeds.

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"

31985 8-Spoke 13" White Wheel and Karrier KR03 Radial Tire - LR D

Replaces Americana 31985DX

Customer Satisfaction Score:

Customer Reviews

Karrier ST175/80R13 Radial Trailer Tire with 13" White Wheel - 5 on 4-1/2 - Load Range D - AM31985

Average Customer Rating:  4.8 out of 5 stars   (3953 Customer Reviews)

Radial tire has a ply rating of 8 and a 1,650-lb maximum load at 70 psi. The 13" diameter x 4-1/2" wide steel trailer wheel features a 5 on 4-1/2 bolt pattern and a corrosion-resistant powder coat finish.


Great fit ,excellent paint on wheels ,tires were nice looking too...thanks


Several hundred miles after one year and the tires and rims are holding up great on rough roads and loading just below the maximum weight rating.

Another year and two cross-country trips later, tires and rims are still doing great. I keep the trailer loaded near maximum allowable weight.
Ryan - 10/01/2022


Great products and very good prices on quality tire. Quick shipment and boxed very nicely. Fit on trailer hub perfectly. Videos really helped me measure hub lugs and explain ply difference and load range differences. I have a better product which will haul more.
I will be buying a hitch and wiring for another car and the videos show me how easy it is to install. Companies around here want up to $400.00 to install. Thanks for the service will be back

The tires are perfect on my trailer. Hardly ever lose air and so trilled to have good rubber when I go across town. Really easy process on buying tires with a rim. No waiting at store installer and helped me learn to change my own tire. I tell people even lately about this business and how wonderful the experience has been. I used to have a raggedy $150.00 yard trailer someone built and neighbors would borrow until last neighbor called and told me he arrived with only the hitch clasp. Bought me a good trailer later and updated the wheels and tires and don’t worry about accidents so much when pulling a load. Thanks for helping me improve my responsibilities towards others on the road
Michael - 12/01/2020


I purchased Loadstar 5.30 12 Bias Trailer Tire 5 on 4 1/2 Load Range C . I failed to notice that it was a Bias Ply which only has a Load Range C at 65 mph. I got back with etrailer for a refund and replace them with a 175 13 Radial that has a Load Range D at 81 mph . It was a hassle free Exchange. Of course they deducted shipping on my refund. Make sure that's the item you want it will save you on shipping cost on your return. Overall I'm very happy with the Tires and rims and they fit perfectly. Very good customer service. I received them in three days. I would recommend this company. 5


I bought these for my 2001 Starcraft pop up, that fully loaded was pushing the max load limit of the load range C tires, and I didn't have clearance for larger wheels and tires. These load range D tires are just what I needed since they have a 250 lb higher limit on each tire. I ordered these on a Saturday afternoon and they were delivered three days later.

where are these tires Kendra manufactured ?
-- comment by: art - 09/06/2013


These arrived quickly and look good. I ordered them mid August, 2022, and the date codes on the tires were 1422, and 3621. So one was about a year out from the manufacture date while the other was quite new.


Tire is the same size and the lug pattern is the same as the originals. Luckily, I have not needed to use it yet!


Tires were perfect for the trailer, replaced boths sides and now the trailer rolls so smooth along the drive that I hardly think I am towing a boat behind me. Gave me an extra spare tire as well.

Product works as promised. Still rolling after a year with no hiccups.probably can get through two more seasons without changing the tires.
Tommy x - 02/07/2015


The wheels/tires were shipped very fast and arrived in perfect condition, as ordered. I have purchases trailer tires before from etrailer and have been totally satisfied with the quality and service.


Customer service is excellent. I received one tire instead of two. Called in and almost immediately spoke to a representative. She got my missing tire shipped out in no time. Definitely recommended etrailer!


I purchased this tire/wheel combo to replace my older bias-ply tires and wheels on my camper. I upgraded to these radials because I do tow my camper on the highway. So far, so good. I’ve only taken these tires out camping a few times - but the trailer is pulling great and the tires seem to be wearing fine. I’d also like to note, that I asked multiple questions to the etrailer folks before buying these. As always, etrailer responded quickly and were very helpful in my decision making. This wheel/tire combo was fairly priced, and I got them within a few days of ordering them.


The tires and rims package we selected,Karrier ST175/80R 13 radial tire with White spoke wheels, came in three days among other holiday gifts thanks for the prompt shipping. We found the quality amazing for the price .These rims and tires are replacing six year old rusted out and dry rotted ones.Perfect fit on our snowmobile trailer. Thanks again.


5500 miles on an extended camping trip through 7 national parks and three monuments from Missouri to California. Put a new set (4) of Kenda tires and wheels on my restored 1991 Sunlight trailer and had no problems whatsoever. Would not hesitate to recommend.


I ordered these tires for my boat trailer. Have not been anywhere yet but I do a lot of fishing all over Tx.I have had several flats and I believe these tires will elimiinate some. Better load range


The tires went right on without any problem,the taillights are from etrailer also.
One of the taillights was broken during shipping and they sent another one right away at no additional charge.
I will be purchasing more from them as i keep this oldie rolling.


After one year and 5000 Mi it seems to be wearing very well. Rim seems and attractive. I would definitely buy it again.


Great service and products


Good service and fast delivery on good looking Kenda Boat Trailer tires on White Spoke rims. A very good deal all around. I am pleased with the product and dealing with the folks at They have also been quite helpful in other transactions we've conducted. Will definitely be back for more.

Holding up well after a year. Very pleased.
Dennis N - 07/02/2021


E Trailer has a great Selection of tires great service, packages were delivered on time as expected, highly recommend this place.


Put these radials on my 21 ft boat trailer for better ride and tire life. They arrived at my house within a few days of placing order and have improved ride. Look great too. Nice to do business with a company that delivers superior service!


Just as described and we'll packaged. They came quickly and make the travel trailer tow much better. Thank you


Very nice tire and rim set.


excellent product, and fast free shippi ng


These worked well for my application. 3500 pound Dexter, boat trailer. I ran them around town and to the lake a few times, then decided to get another as a spare. I've made many purchases from etrailer. etrailer's service is unmatched. I typically receive my order in 2-3 days, which is pretty incredible.


Megan G. in customer service assisted me in getting the tires/wheels I needed for my fishing boat trailer. Now, in the scheme of all things important, I think we all know how critical preparedness is when speaking of fishing gear.

Imagine me with my trailer on jack stands and seeing all the other boats out on the lake hauling in their limits of salmon and lake trout. This cannot stand.

Megan followed up with phone calls and email to ensure all my transportation needs were met and did so with grace, friendly and capable service. I have purchased from etrailer before and will continue doing so. BTW, the wheels and tires are perfectly fine and were shipped in a smart cardboard overwrap and arrived right on time, if not earlier than expected. Thank you Megan and to your support team. They are on my trailer and I am rolling today.

They have been a disappointment. They have rusted, and I would not buy them again. I would surely buy from etrailer, but not that brand of wheels.
Goin f - 01/06/2018

Show More Reviews

See what our Experts say about this Kenda Trailer Tires and Wheels

  • Increasing Wheel and Tire Size to Increase Trailer Ground Clearance
    By going with the 5.3x12 tire, you will gain 1/4 inch in width and 3.8 inches in diameter which would gain you approximately 2 inches of additional ground clearance. Other than having to move or modify your existing fenders, going with the larger tire size will work just fine for you.
    view full answer...
  • Things to Consider When Choosing Replacement Trailer Tires
    If the trailer is made for 185/80-13 tires, then I would stick to that size. But if you need to go to a different size, there are some things to consider. Going to a smaller size like the 175/80-13 will not cause problems in terms of the tire interfering with the trailer or fenders, but you will have a lower capacity. For capacity, you will want to go by the axle capacity. This information can usually be found on a plate or sticker on the trailer frame or tongue. If you decide that you...
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  • Proper Trailer Tire Inflation
    For maximum tire wear and performance, trailer tires should always be kept inflated to the maximum psi stated on the tire sidewall. In your case, keep the tires inflated to 65 psi. To see our trailer tire FAQ, click on the provided link.
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  • When Should Trailer Tires be Changed on a 2004 Rockwood Roo Travel Trailer
    How often you need to change trailer tires depends on several factors. A trailer that has good tread depth and is not towed often with tires that are in good shape you will only need to change out the tires once the tread depth gets to 2/32 of an inch. If the trailer sits for long periods of time and is exposed to the elements, the tires can experience dry rot. These tires should be changed before towing, even if they have a good tread depth. Also, to help prevent blowouts always inflate...
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  • What is the Speed Rating for a Karrier ST175/80R13 Radial Trailer Tire
    All of the trailer tires that we carry are rated for 65 miles per hour unless otherwise noted. This is considered a high speed rating since it is highway speed. I have included a link to our tire and wheel FAQ articles for you.
    view full answer...
  • Karrier ST175/80R13 Trailer Tire and Wheel Recommendation as a Replacement for a A78 x 13B Tire
    As long as your trailer has a 5 on a 4-1/2 inch bolt pattern this Karrier ST175/80R13 Radial Trailer Tire with 13 inch White Wheel # AM31985 would work for you. The A78 x 13B tire size that you referenced is the exact same size as the ST175/80 size. When it comes to trailer tires you always want them inflated to the maximum psi so they will perform better, wear better, and get the best gas mileage. I attached a couple FAQ pages on trailer tire sizes and FAQs for you to check out also.
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  • What is the Minimum Clearance Between Tires on a Dual Axle Gooseneck Trailer
    Normally, at the very least, there should be 2 inches between the tires on a dual axle trailer. This will allow the suspension components room to work properly. Also, if the axles are too far apart, the tires are more likely to drag some when turning.
    view full answer...
  • What Needs to Be Considered to go to a Larger Trailer Tire Size
    There are two main things to consider if you would like to use a larger size wheel and tire on your trailer. The first thing is the bolt pattern of your current hub. You will need to determine the bolt pattern of your hub so you can determine which bolt pattern rim you should purchase. The next thing you will need to consider is clearance. If there are wheel fenders you will need to consider vertical clearance. You will also need to consider the clearance from the wheel to the inside of...
    view full answer...
  • What is the Speed Rating for the ST 175/80R13 Radial Trailer Tire
    The ST rated wheel and tire combination you referred to, # AM31985, is rated for 65 miles per hour which meets DOT standards for trailer tire applications. Unless otherwise noted all ST (special trailer) tires that we carry are rated for 65 miles per hour.
    view full answer...
  • Can a Camper With ST175/80x13 Load Range C Tires Be Upgraded to Load Range D Tires
    Going from a ST175/80x13 load range C tire to a load range D tire in the Kenda Tires and Wheel, part # AM31985, is no problem. As you mentioned, changing to the higher load range will not increase the amount of weight that your camper can carry. If you are using radial tires there will be a bulge look to the sidewall of the tire because of the way a radial tire is constructed. Since the belts or cords inside the tire run from bead seat to bead seat across the radius of the tire it gives...
    view full answer...
  • Best 13 Inch Trailer Tires and Wheels for a 1500 Pound Casita Trailer
    All wheels are not created equally! And the same goes for tires. The P in front of your tire size indicates that the tires are for passenger vehicles, not trailers. This is a problem because trailer tires and vehicle tires are constructed differently. Trailer tires are built with a thicker sidewall than passenger vehicle tires to handle more vertical load. You really need to switch to ST (special trailer) tires for your trailer. The wheel, since it came off of a trailer, will be fine for...
    view full answer...
  • Replacement Rim and Tire Recommendation for a Featherlight Trailer with B78-13 ST Tires
    The B78-13 tire size you have is basically a 175/80-13 so you are on the right track in that regard. If you do have 2-3/4 inches between your wheel studs then yes you do have a 5 on 4-3/4 inch bolt pattern. Which means we don't have a rim that would work for you. If maybe you didn't measure quite right and you actually have 2-5/8 inches then you have a 5 on 4-1/2 inch bolt pattern and would want the part # AM31985. I attached an FAQ article on determining bolt patterns for you to check...
    view full answer...
  • Can Bigger Wheels And Tires Be Used On Camper
    In order to be able to place bigger wheels and tires on your camper, the first thing needed is the bolt pattern you have on the existing wheels you wish to replace. The tire/wheel combos we offer for that tire size either have a 4 on 4 or 5 on 4-1/2 inch wheel bolt pattern. The 13 inch combos we offer have multiple wheel bolt patterns, so getting that measurement is most important. If you are looking for 14 inch tire/wheel combos, the bolt pattern we offer is 5 on 4-1/2. I have attached...
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  • Changing Existing 5.30-12 Tires on 1997 Coleman Sea Pine Pop-Up with 175/80-13 Tires
    A 5.30-12 tire measures about 22 inches in diameter. A 175/80-13 tire would be about 2 inches larger in diameter at 24 inches. This means that the top of the tire will be 1 inch closer to the underside of the fender. Under a full load, we recommend at least 3 inches of clearance between the top of the tire and the underside of the fender. If you currently have 4 inches of clearance, adding a tire that will be 1 inch closer won't be a problem. If you don't have that kind of clearance, you'll...
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  • How to Pick Out a Replacement Wheel and Tire for a Car Tow Dolly
    I am sure we do, but since I don't know what size tire/rim/bolt pattern the Kar Kaddy has you will first need to determine those things and you will be able to pick out the correct replacement wheel/tire. First you will want to determine the size of the tire. This should be stamped on the sidewall of the tire. See pic to the right. Once you have that you will want to check out the tire size FAQ I attached to the right. All of the tire sizes we offer will be listed there. Click the one...
    view full answer...
    Image 1 for
  • How to Determine if Wheel is Hub Centric or Lug Centric
    Since you mention that the bolts are pressed in with nuts to hold the wheels on, it sounds like you have lug centric wheels. Lug centric wheels slide onto studs on the hub and are secured with lug nuts. If a wheel is hub centric, the wheel centers on the hub and bolts are threaded into the hub to secure the wheel. If you can provide me with your axle capacity, tire size, and bolt pattern I would be happy to assist you in finding a wheel that will work for you.
    view full answer...
  • Replacement Boat Trailer Tires for Size A78-13
    The tire size you referenced, A78-13, corresponds to the metric tire size 175/60-13 and this size tire will fit 13-inch diameter rims of 4-1/2-, 5- and 5-1/2-inch widths. The linked article includes a cross-reference. Tires in this size are available in three load ranges: Load Range B: 1,100 lbs at 35 psi Load Range C: 1,360 lbs at 50 psi Load Range D: 1,610 lbs at 65 psi We offer tires on their own and also mounted on a wheel. The link provided will show you all options for both tires-only...
    view full answer...
  • Does Karrier Radial Trailer Tire With White Wheel Have Offset
    The wheels we carry will have the offset listed in the Specs section on the product page if one exists. The Karrier ST175/80R13 Radial Trailer Tire with 13" White Wheel, part # AM31985 you referenced has no offset on the wheel.
    view full answer...
  • Replacement Tire/Wheel For Trailer With 195/50R-13 Tires
    The tire/wheel combination I recommend for you is the Karrier ST175/80R13 Radial Trailer Tire with White Wheel, part # AM31985. This is a Radial tire with a ply rating of 8 and is on a 4-1/2 inch steel wheel. This tire/wheel combo will be a bit taller than the tire/wheel combo you currently have. By my calculations your current tires are approximately 20-3/4 inches tall. With part # AM31985 the height of the combo is 24 inches. This is a 5 on 4-1/2 inch bolt pattern and has a weight capacity...
    view full answer...
  • Difference Between a ST175/80D13 and a ST175/80R13 Trailer Tire
    The difference between the letter D in your ST175/80D13 and the R in the tire size of the Wheel and Tire ST175/80R13 part # AM31985 that you referenced is the tire construction. D stands for bias-ply which is a less preferred tire construction, whereas R stands for radial. Because of the construction of a radial tire, the tire has more flex and will allow for more ground contact. That will improve traction and better tread wear. It also gives the radial tire better stability. The radial...
    view full answer...
  • Torque Rating for Lug Nuts on a Camper Trailer
    In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.
    view full answer...
    Image 1 for
  • Differences Between Radial and Bias Ply Trailer Tires
    The difference is that D stands for bias-ply and R stands for radial. The main difference between a radial ply and a bias ply tire is how the tire is constructed. The cords inside a bias ply tire run at a 32 degree angle to the direction of travel, and the cords on a radial tire run at a 90 degree angle to the direction of travel, or across the tire from wheel lip to wheel lip. A radial tire flexes more than a bias tire, giving it better ground contact, traction, stability, and tread...
    view full answer...
  • Can 12 Inch Wheels And Tires Be Replaced With 15 Inch Wheels And Tires On Camper Trailer
    The main concern when you want to install bigger tires and wheels on your trailer. You will want to make sure you have the clearance needed for new tires and wheels. Going from 12 inch tires to a 15 inch is going to raise the trailer substantially. A typical 12 inch tire we offer has a range from about 20 to 22 inches diameter. If you put 15 inch tires on the trailer that diameter can range from 27 to about 28-1/2 inches. Increasing the tire and wheel size on your trailer will not increase...
    view full answer...
  • Do Trailer Wheels and Tires Come Balanced
    The trailer tire and wheel combination part # AM31985 is received from the supplier already with the tire mounted on the wheel. The supplier does not balance the combination, but when the tire is installed to the wheel they will line the high (heavy) spot on the tire with the low (light) spot on the wheel. This does not completely balance the tire and wheel combination but it does eliminate any excessive out of balance condition.
    view full answer...

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