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Kenda Karrier S-Trail ST145/R12 Radial Trailer Tire - Load Range E
Kenda

Kenda Karrier S-Trail ST145/R12 Radial Trailer Tire - Load Range E

Part Number: AM10140
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$112.82
Retail:$160.99
You Save: $48.17
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Radial special trailer tire with automotive-grade tread has a ply rating of 10 and a 1,520-lb max load at 80 psi. Designed for highway use. Constructed of double steel belts and full nylon plies. Fits 12" wheels. Great Prices for the best trailer tires and wheels from Kenda. Kenda Karrier S-Trail ST145/R12 Radial Trailer Tire - Load Range E part number AM10140 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Kenda Trailer Tires and Wheels - AM10140

  • 12 Inch
  • Tire Only
  • 145/80-12
  • Load Range E
  • Radial Tire
  • M - 81 mph
  • Kenda

Radial special trailer tire with automotive-grade tread has a ply rating of 10 and a 1,520-lb max load at 80 psi. Designed for highway use. Constructed of double steel belts and full nylon plies. Fits 12" wheels.


Features:

  • Radial ply tire is great for highway use
  • Constructed with double steel belts and full nylon plies for superior function and long life
    • Premium rubber compound materials help disperse heat
  • 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
  • Meets DOT specifications


Specs:

  • Fits: 12" x 4" rims
  • Tire size: ST145/R12
    • Section width: 5.7"
    • Outer diameter (when inflated): 21.3"
  • Capacity:
    • Load range: E
    • Ply rating: 10
    • Maximum load: 1,520 lbs at 80 psi
  • Maximum speed: 81 mph (speed rating M)
  • 5-Year limited warranty
  • 1-Year worry-free guarantee


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.


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.


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.



10140 Kenda Karrier KR25 S-Trail ST145/R12 Radial Tire - LR E





Customer Satisfaction Score:

Ratings & Reviews

4.9

500 reviews
Radial special trailer tire with automotive-grade tread has a ply rating of 10 and a 1,520-lb max load at 80 psi. Designed for highway use. Constructed of double steel belts and full nylon plies. Fits 12" wheels.

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Show More Reviews

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

  • How to Get the Most Out of Your Trailer Tires
    We have just what you are looking for. Although we do have load range D tires in the 5.30-12 size they are bias as opposed to radial in style. Bias tires are meant more for off-road purposes like agriculture whereas the radial tires have a sidewall with more flex that can better dissipate the heat build-up than bias can. I recommend going with the Taskmaster 5.30R12 Radial Trailer Tire # TT53012C. It has a load range of C (Maximum load: 1,050 lbs at 80 psi), a max speed rating of 81 mph,...
    view full answer...
  • Can 4.80-12 Tire be Replaced with ST145/R12 Tire Using the Same Wheel
    Yes, the Kenda Karrier S-Trail ST145/R12 Radial Trailer Tire # AM10140 referenced in your question will fit the same 12 inch wheel with a 4 inch width that your existing 4.80-12 size tires are mounted to. Just note that the ST145/R12 tire will be about 0.8 inches larger in diameter, so you will want to make sure you have the necessary clearance on your trailer for the slightly larger tire size. This Kenda radial ply tire is going to provide an excellent upgrade over your existing set....
    view full answer...
  • Comparing Trailer Wheel and Tires in Size ST145/R12
    The Kenda Karrier S-Trail ST145/R12 Radial Trailer Tire - Load Range E # AM10140 and the Aluminum Lynx Trailer Wheel - 12" x 4" Rim - 5 on 4-1/2 - Silver # LH45FR is the wheel and tire that you want. There is very little difference between the two except for Load Range. I would choose the higher load range. These do not come mounted, so you can have them mounted at a local shop when they arrive.
    view full answer...
  • Recommended Tires for Pontoon Boat Trailer and Speeds Around 75 MPH
    For your pontoon boat trailer, I recommend moving to a larger tire so that you can get the speed rating you need. I would only move up one size, so you don't go too far with adding height to your trailer. I recommend the Taskmaster 5.30-12 Bias Trailer Tire with 12" White Spoke Wheel - 5 on 4-1/2 - Load Range C # TA76RR which are rated for up to 1,045 lbs at 80 psi and have a speed rating of 81 mph max. You will want to be aware of the overall dimensions of the tire so you can make...
    view full answer...
  • How to Switch to Radial Trailer Tires From 205/65-10 Bias Trailer Tires
    Hi Dan, You're right that radial trailer tires are a much, much better option for highway driving than bias tires because radials run cooler. This means they flex more for better traction and less chance of a blowout on long trips. And you can switch from 205/65-10 bias tires to radials, but you'll need a different size tire and new wheels because there aren't 205/65-10 radials. A 205/65-10 measures 20.5" in diameter and 8.1" wide, and a close option is a ST145/R12 tire which is 5.7"...
    view full answer...
  • Aluminum HWT Wheel Compatibility With Timbren Axle-Less Trailer Suspension System With Hubs
    The Timbren Axle-Less Trailer Suspension System with Hubs - 5 on 4-1/2 - Off-Road Tires - 1,200 lbs # A12WS545 is compatible with the Aluminum HWT Series S5 Split Spoke Trailer Wheel - 12" x 4" Rim - 5 on 4-1/2 # AM22319HWT. With these wheels you most likely want valve stems # AM20903. For tires, I recommend the Kenda Karrier S-Trail ST145/R12 Radial Trailer Tire - Load Range D # AM10130. You may also be interested in the Trailer Wheel Center Cap, 3.19" Pilot Size # 319EZ for that...
    view full answer...
  • Radial Trailer Tire to Replace Bias Ply 4.80-12 Trailer Tires
    The closest radial tire size we offer to your 4.80-12 bias ply trailer tire would be the Karrier S-Trail ST145/R12 Radial Trailer Tire # AM10140. This tire will be about an inch taller and wider than what you currently have. You will need to make sure your trailer has enough clearance for this. I attached a couple FAQ articles on trailer tires for you to check out as well.
    view full answer...
  • Trailer Tire Recommendation for Replacing Size ST14512
    For a 12 inch trailer wheel I would recommend the Taskmaster 4.80R12 Radial Trailer Tire part # TT48012C as it has a higher speed rating of 81 mph which is great for highway use and has plenty of weight capacity at 990 lbs per tire. It would only be slightly smaller in diameter than the size you have now but fits the same wheel.
    view full answer...
  • Will Switching to Bigger Wheels On a Tow Dolly Limit the Amount of Blowouts
    If I'm looking at the right thing, then the reason you're having so many blow outs is because you're overloading the dolly. It looks like the tires you have right now are likely something like the Kenda Karrier S-Trail ST145/R12 Radial Trailer Tire # AM10140 which has a max weight capacity of 1,520 lbs (x2 = 3,040), so you'd be overloading the dolly by around 2,000 lbs (according to Google). Using a 15" wheel will definitely give you more capacity, around 600 more lbs, but still won't...
    view full answer...
  • Replacement ST145R12 Tire and Wheel for Acme Tow Dolly
    Any trailer or tow dolly tire should always be inflated to the maximum psi pressure shown on the tire sidewall. It is never appropriate to under- or over-inflate a trailer/dolly tire since only when fully inflated can the tire deliver its rated weight capacity. Naturally it is also important that the vehicle loaded on the dolly be within the dolly's rated capacity. Acme offers several different dolly products and these are specified to use Load Range E tires in size ST145R12. Their wheels...
    view full answer...
  • What is the Difference Between the Load Range D and E for the Tire Size ST145R12
    Load range D has a capacity of 1,220 lbs at 65 psi, whereas load range E has a capacity of 1,520 lbs at 80 psi. Basically the only difference between the two is the weight capacity. With trailer tires you always want to have them inflated to their maximum that way you get the best handling, braking and wear characteristics. You should note that if you increase the load capacity of your tires it will not necessarily increase the overall capacity of your setup. You must always go with the...
    view full answer...
  • Wheel Options for the Kenda Karrier S-Trail ST145/R12 Radial Trailer Tire - Load Range E
    Thanks for reaching out, Steve! The Kenda Karrier S-Trail ST145/R12 Radial Trailer Tire - Load Range E # AM10140 style is offered on some wheels with a 5 on 4-1/2" bolt pattern, but it's using the Load Range D version instead: - With White Wheel # AM31199DX - With Black Wheel # AM35354 - With Galvanized Wheel # AM31202 If you need the higher Load Range E rating then you'll need to purchase the tire and wheel separately and have a shop mount the tires for you. For this application...
    view full answer...
  • Will Anti Rattle Fit Convert a Ball Mount
    No it would not since they require a totally hollow shank.
    view full answer...
  • Will Trailer Tire Size 145/80-12 Replace 4.80-12
    The tire size 145/80-12 does fit on the same rim size as what your 4.80-12 fits on. For that we have the # AM10140 which is a radial trailer tire size. This would basically be just .8 inches taller overall so it would fit and work well.
    view full answer...
  • Radial Trailer Tire to Replace 5.30-12 Recommendation
    In the 5.30-12 size we only have bias ply options. For a similar size that would work that is radial we have the ST145R12 like the part # AM10140 which would work really well. This will fit the same wheel size.
    view full answer...
  • Upgrading to Larger Tires for Off-Road Use on a Coachmen Popup Camper
    Thanks for the picture! There is going to be a noticeable benefit to having larger tires on dirt roads that are poorly maintained. The larger tires will give you a wider footprint by almost 30% which translates to more stability and grip. The Kenda Karrier S-Trail ST145/R12 Radial Trailer Tire - Load Range E item # AM10140 is 5.71 inches wide the Kenda Karrier ST205/75R14 Radial Trailer Tire w/ 14" White Spoke Wheel - 5 on 4-1/2 - Load Range D item # AM32161 you were looking at are 8.07...
    view full answer...
    Image 1 for
  • Replacement Tires for 2011 Jayco Jay Sport 8
    Typically when it comes to replacing a trailer tire I recommend sticking with the same size. Although I do not know the weight capacity of your current tires, we do have the Taskmaster 5.30R12 Radial Trailer Tire - Load Range C # TT53012C. This radial tire has a maximum load of 1,050 lbs at 80 psi with a max speed of 81 mph. It looks like your trailer has a GVWR of 1,995 lbs so these tires will handle that without any issues. Because of the tire size, it is also possible to go to a 145/80-12...
    view full answer...
  • Can a ST145/80R12 Replace a 4.80x12 Trailer Tire
    You should have no problem at all replacing your 4.80x12 trailer tires with a 145/80R12 radial tire as they are designed to fit the same 4 inch wide 12 inch diameter rims. For a radial tire in the 145/80R12 size you would want the Karrier S-Trail ST145/R12 Radial Trailer Tire # AM10140. This tire will be a little less than an inch taller than your current tire and will be a little less than an inch wider as well. You might want to check to make sure you have the fender and frame rail clearances...
    view full answer...
  • Silver Wheel and Tire in Size ST145R12 with Load Range E
    We only have an aluminum wheel with the tire size and Load Range E that you are looking for so your best option would be to get the tire you need with the part # AM10140 and then go with a silver steel wheel like the part # AM20165 and you'd be set.
    view full answer...
  • Will Upgrading to ST145/R12 Load Range E Tires Help Prevent Blowouts?
    Increasing your load range could be a good thing or a bad thing depending on the situation. If your trailer isn't pushing the load capacity of your current tires, then I wouldn't worry too much about increasing the load range to prevent blow outs. If you are using bias ply tires, then upgrading to radial tires will have a significant impact because radial tires are much better suited to highway/paved road travel. The cords in the rubber are more suitable to flex which allows for more...
    view full answer...
  • How to Choose Trailer Tires for Boat Trailer Making Highway Trips
    Trailer tire selection needs to take into account the required tire weight load range for the loaded trailer's weight and also your driving speed. Both the weight load on the tire and your driving speed affect the tire's operating temperature, which in turn affects its longevity. You'll want to take a look at your current tires to find their Load Range rating and their size designation. The linked page will display all 12-inch special trailer tires which are offered in either bias ply...
    view full answer...
  • Can I Use a Tire With a Bigger Load Rating Than What is Needed for My 2006 Jayco Camper
    Most of the wear on tires is from miles that are put on it from traveling and bumps. Even if weight is making a difference, it wouldn't be very noticeable. What is basically boils down to is how well you treat your tires and how nice the roads are that you are driving on. With that being said, there is no harm in using a higher load rating than the Kenda Karrier S-Trail # AM10130 which is a Load Range D for your 2006 Jayco Pop-Up Camper. The Kenda Karrier S-Trail # AM10140 which has a...
    view full answer...
  • Wider Tire Recommendation for 5.30-12 Size Tires that Keep Blowing Out
    There are a few different reason why you would be getting blowouts; 1) tires are not inflated to the correct psi, 2) trailer is loaded for weight that is higher than the weight capacity of the tires, 3) tire sidewalls are damaged due to hitting curbs, 4) the max speed rating of the tires has been exceeded. The most common combination leading to blowouts is reasons number 1 and 4; improper inflation and exceeding the speed rating. Both will cause the tire to overheat and ultimately blow. The...
    view full answer...
  • Wider Tire Recommendation to Replace 4.80-12 Tire Size
    The widest tire we offer that will fit the same rim as your 4.80-12 tires is going to be a ST145/R12 tire like part # AM10140 which has a section width of 5.7 inches. Overall diameter would be increased by less than an inch. This will give you a tire that is .8 inches wider.
    view full answer...


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