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Karrier ST175/80R13 Radial Trailer Tire - Load Range D

Karrier ST175/80R13 Radial Trailer Tire - Load Range D

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Shipping Weight: 19 lbs
Kenda Tire Only - AM10210
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Product Expert Mary E

Is this right For you? Product Expert Mary E says:

Yes, if you:

  • Need a higher weight capacity to support your heavy boat
  • Often tow long distances on the highway on the way to the campsite

No, if you:

  • Frequently tow during rainy or snowy conditions
  • Want roadside assistance for extra peace of mind
Radial special trailer tire provides excellent traction for a safe, smooth ride in both wet and dry conditions. Constructed of double steel belts and full nylon plies. Fits 13" wheels and has a maximum load capacity of 1,650 lbs at 70 psi. Lowest Prices for the best trailer tires and wheels from Kenda. Karrier ST175/80R13 Radial Trailer Tire - Load Range D part number AM10210 can be ordered online at or call 1-800-940-8924 for expert service.
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  • Reviews (1391)
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Kenda Trailer Tires and Wheels

  • Tire Only
  • 13 Inch
  • 175/80-13
  • Load Range D
  • Radial Tire
  • M - 81 mph
  • Kenda

Radial special trailer tire provides excellent traction for a safe, smooth ride in both wet and dry conditions. Constructed of double steel belts and full nylon plies. Fits 13" wheels and has a maximum load capacity of 1,650 lbs at 70 psi.


  • 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
  • Double steel belts and full nylon plies combine for superior function and long tire life
  • Computer-generated tread design and premium rubber-compound materials
    • Maximum traction in wet or dry conditions
  • Smooth ride and excellent stability at highway speeds
  • ST tire meets Department of Transportation specifications


  • Fits: 13" x 4-1/2", 13" x 5" and 13" x 5-1/2"
  • Tire size: ST175/80R13
    • Section width: 7"
    • Outer diameter (when inflated): 24.1"
  • Capacity:
    • Load range: D
    • Ply rating: 8
    • Maximum load: 1,650 lbs at 70 psi
  • Max 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.

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.

10210 Kenda Karrier KR03 Radial Tire - LR D

Item # AM10210

Customer Reviews

Karrier ST175/80R13 Radial Trailer Tire - Load Range D - AM10210

Average Customer Rating:  4.8 out of 5 stars   (1391 Customer Reviews)

Radial special trailer tire provides excellent traction for a safe, smooth ride in both wet and dry conditions. Constructed of double steel belts and full nylon plies. Fits 13" wheels and has a maximum load capacity of 1,650 lbs at 70 psi.


Bought 3 of these to replace the original 2 tires + spare on my 2014 single axle travel trailer. Tires perform very well, no problems.


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.


I bought 2 wheels and 3 tires to replace some old tires on my double PWC trailer. Put both new wheels on yesterday and mounted the extra on an old wheel for a spare. Mounted this to the trailer using spare tire carrier and everything worked out great. The tires and wheels look great and the spare mounted without any problems to the trailer.


Just what I was after. Shipping was fast and tires arrived in individual boxes that were in perfect shape when they got here. Thanks again for another successful purchase.

The tires are working out for me as expected. Great tires for my boat trailer.
Duane - 04/26/2021


I recieved the trailer tires really fast. They have a good tread design and when mounted look great. I installed them on a very small travel trailer which came out with a load range C. These have a load range D which should be an improvement due to a little more pressure and carring capacity. I am very pleased with the delivery time and looks of the tires.


I bought this tire to replace the spare on my trailer of 18 yrs. Also bought the wheels with the same tires, now my trailer looks like a newer model. THANKS ETRAILER!


Looks nice but I can’t give an honest review because it’s for a spare wheel for my trailer. I’ll update this review if I’m unfortunately forced to use it. I will say that I choose a radial instead if a bias ply because the supposedly trac better.


The team at etrailer were professional and on top of things from beginning to end!! Thank you etrailer


These tires were exactly what I ordered and arrived really fast, within a couple of days. I obviously can’t review the tires since I just unboxed them but I know etrailer carries quality products. I had such a good experience with my 1st purchase from them a few years ago (Tekonsha brake controller ) and they have such a good reputation with the RV forum I frequent that I felt comfortable ordering without calling them. The manufacturing date on each tire is 1421 which I am really happy with. Mid April to mid September is good! Thanks, guys!


We have used these tires for 8 years (3 sets) for our heavier than normal hard side pop-up camper trailer. Most of our miles are on gravel roads and these tires have stood the test.

etrailer has always been top notch to work with and ship on time.


Have to run a lot of air pressure with this tire, seems to bounce the trailer a little more when hitting bumps. Does track straight and easier to push trailer with boat back in garage.


Great tires. Have purchased two sets over the years. 8 plies makes the difference.


Very fast delivery. Now have a tir

fast delivery. Now have tires with higher load rating on camper adding safety and peace of mind. Outstanding service.


Tires are wearing well. Track well on the highway and have sealed good on the rims. Pleased so far.


Excellent service ! Thank you !


I am very happy that you had the tires that my trusted [tire] company could not get. I was thrilled to get them in two days! I was expecting them in the 7 - 10 days I was told. I compared your prices to [tool store] prices after ordering and was not disappointed. Manufacture was 1821 and 1521 - very recent. I was going to write after the tires were mounted. etrailer has always been a good trailer source.


I purchased two of these tires for my boat trailer 5 years ago. They had maybe 10-12k miles on them. Last fall I had one of the tires go bad - the tire cords failed causing uneven wear. It didn't blow out but I was perhaps lucky. Purchased a replacement - same tire. Last month I had a similar cord failure with the other old tire. After that problem was going to purchase 2 new name brand tires but couldn't find any D load rating tires in the 175/80R13 tires. Decided to just buy another Karrier tire. When my mechanic changed out the second tire he said the inside of this one was far worse than the first failure. I was running the tires with 55 psi of air with a max listed pressure of 65 psi. Maybe that was a factor so now running the tires at 60 psi and plan on changing them after 3 years. Not real comfortable with these tires but hopefully I can get 3 years out of them without a failure.


Awesome tire! I purchased these a year ago for my pontoon trailer. No issues so far.


Ordered tires for trailer. Rec'd the freshest I've ever seen. Manufacture date was 30 week of 2017. Installed 7/19/17. Does that even add up???? 8 Ply trailer tires hopefully will minimize the tire explosions in the future.

So far so good.
Joe T - 07/23/2018


These tires replace the old tires for my tent trailer and are identical to the ones I took off, so I have high confidence in them .
Delivery was quick and this was much appreciated


This tire will be used as a replacement on my boat trailer. I'd been waiting for over 3 weeks to receive this make tire from a dealer in the Cleveland Ohio area. I canceled the order after speaking with Natalie, who, by the way is a wonderful customer service representative. Then, I received the tire 2 days later! Great company and excellent service!! When I need tires again I'll call. Thanks Natalie


I needed four tires for a travel trailer and two plus new springs for a boat trailer. Customer service was very helpful with wisdom about tires and searching for some hardware we couldn't exactly match but found some good enough. Gave me her number at end of first call in case I needed any more help and I did.

A few hours after ordering I got email reporting all shipped.

All arrived on predicted time. Over the years I have noticed that tire quality is often approximately reflected in visible details like the fit of the mold segments, amount of flash, the surface finish, sharpness of details. These are some of the prettiest tires I've ever seen that weren't top of the line Michelins, Pirellis or Bridgestones. I gave them a roll and a sharp eye and saw no wavers vertical or horizontal.

Of course the ultimate issue is price. I don't know how you do it. No store in Jacksonville can come close. Even Wal-mart.


As always, Etrailer delivered what I needed and fast. The Karrier ST tires I ordered were only a few weeks old according to the date stamp.

The tires still look like new after ~6000 miles. Ill buy these again when I need new tires.
Doug B - 11/14/2014


Reasonable prices, timely shipping. Nice looking tire that should be exactly what I need on my boat trailer. Thanks !!


Just returned from 2nd long road with about 3400 miles each. Also logged a few 300 mile trips. So far, holding up well. Run 50 psi. Tires are D rated. This is my 2nd set of 4(double axle). 1st set didn't quite go as far. Had sidewall failure on two of the four. Maybe bad batch. Would recommend due to steel belts and D rating. Original equip. was C rated and fiber glass belted.

Trailer tires, unlike those used on passenger vehicles, should be kept at the maximum pressure indicated on the tire sidewall, which is 70 psi in this case. Failure to keep the tires fully inflated can lead to excessive heat build-up, which is the number one cause of premature tire failure.
-- Etrailer Expert Mike L - 05/30/2019
Show More Reviews

Ask the Experts about this Kenda Trailer Tires and Wheels

  • Recommended Replacement Radial Tires For Trailer When Bias Tires Are Wearing Unevenly
    There can be a couple reasons why your tires are wearing on the outside edge. The first may be that you have the tires on a trailer that has a large capacity and you are not carrying much weight. Since axles have a bow and flex a bit when a load is placed on the suspension, all of the tire may not be coming in contact with the pavement evenly. Another possible reason for the uneven wear is the axle has been turned over and used with the bow going the wrong way. Another possibility...
    view full answer...
  • Replacing 6.50-13ST Tires on 1981 Highlander Boat Trailer
    The closest modern equivalent tire size to the 6.50-13 would be 175/80-13. This tire size is recommended for use on a 13 x 4-1/2, 13 x 5 or 13 x 5-1/2 rim. I've provided you with a diagram showing how to measure the width of a rim, the problem is, it's a difficult measurement to take unless the tire's removed from the wheel. If your boat trailer has plenty of clearance to the inside of the wheels, I'd recommend going with a new wheel/tire combo. You'll want the combined load rating of...
    view full answer...
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  • ST175/80R13 Trailer Tire Recommendation for a Boat Trailer to Replace 185/80R13
    From a size point of view you could go from a 185/80R13 to a ST175/80R13. They would only be a tiny bit smaller. Based on the weight of your trailer and boat I would recommend going with the Load Range D like part # AM10210 as it has a capacity of 1,610 lbs at 65 psi which would be more than you would need. Typically we recommend replacing trailer tires around 7 years of age.
    view full answer...
  • Highest Load Range Tire Sized ST175/80-13
    The highest Load Rating we offer in your size of ST175/80-13 is a Load Range D like the part # AM10210 which has a 1,610 lbs at 65 psi rating. I attached a review video for you to check out as well. This tire is a radial which would be an improvement over the bias-ply tires you currently have. A radial tire will normally run cooler than a bias ply tire, especially when the tire is under a load. A tire that runs cooler will last longer. A bias ply tire has a stiffer sidewall than a radial,...
    view full answer...
  • What Tire Size Will Replace the 6.50 X 13 Tires on a 1971 Smokey Camper Trailer
    The 6.50 x 13 tire size is the old numeric sizing used in the 1970s. It means the tire is 6-1/2 inches wide and the height of the tire calculates to 23.4 inches. The closest tire size I have to the 6.50 x 13 tire will be the 175/80-13 size. It is 6.9 inches wide and 24.1 inches tall. You will need to check if you have enough space on your camper for a 1/2 inch wider and 3/4 inch taller tire. The tire will fit on a 4-1/2 inch to 5-1/2 inch wide wheel. You will want to see what the total...
    view full answer...
  • Recommendation for a Replacement Tire of a Jayco Popup Camper with a ST175/80D13 Tire
    For your Jayco Popup Camper, I recommend replacing your tires with the Kenda Karrier St175/80R13 Radial Trailer Tire, # AM10210. The Karrier tire will be an upgrade to your bias ply tires that you currently have on your camper. The Karrier radial tire will run cooler and give you a smoother ride. The tire is load range D and has a weight capacity of 1,610 lbs at 65 psi. The Karrier also has a 8 ply rating with double steel belts. I have attached a video for you to review on the Kenda...
    view full answer...
  • Would Trailer Rim that Had ST155/80R13 Also Fit Tire Size ST175/80R13
    Yes, the tire size ST175/80R13 can fit on tire rim widths between 4-1/2 inch and 5-1/2 inch which would be the same as what you would have had an ST155/80R13 mounted on.
    view full answer...
  • Trailer Tire Recommendation for Size 175/80R13 with Higher Speed Rating
    For a Load Range D 175/80R13 size tire I recommend the Kenda, part # AM10210. It has an 81 mph speed rating and a weight capacity of 1,610 pounds at 65 psi.
    view full answer...
  • Speed Rating on the Karrier # AM10210 ST175/80R13 Tire
    The Kenda 175/80R13 tire, part # AM10210, is rated up to 81 mph. Trailer tires have a speed rating which is listed on its sidewall. If there is no rating on the sidewall than the tire is rated for 65 mph.
    view full answer...
  • Will Higher Load Range Trailer Tires Change Trailer Ride Quality
    The metric equivalent size for an A78x13ST original trailer tire is the ST175/80-13 size you referenced. Changing to a higher Load Range tire will not really affect your ride quality very much. But what this will do is help to prevent excess heat in the tires since they will tend to remain cooler if they are used below their rated capacity. A tire that has to carry 90-percent of its rated load capacity will get warmer than one that carries only 70-percent of its maximum rated load. Since...
    view full answer...
  • Speed Rating Of Kenda Karrier ST175/80R13 Radial Trailer Tire - Load Range D # AM10210
    The speed rating of the Kenda Karrier ST175/80R13 Radial Trailer Tire - Load Range D # AM10210 is 81 mph max. A tire's speed rating should be listed on its sidewall. If there is no speed rating then it's considered a maximum speed of 65 mph.
    view full answer...
  • Can ST175/80R13 be Replaced with ST185/80R13
    The tire size ST185/80-13 that you are interested in will fit the same wheel dimensions as your old tire size so this would be a great option as long as you have the additional clearance needed for the slightly larger tire size. It will be .3 inches taller and 10 mm wider. So realistically you shouldn't have a problem at all. So long story short the part # AM10210 you are interested in will fit your rim. This is a Load Range D like you said you wanted with a capacity of 1,610 lbs at 65...
    view full answer...
  • When Should Trailer Tires be Inflated to Their Max PSI Rating
    When inflating trailer tires you want to inflate them to the max PSI rating when they are cold. So your tires should be inflated to 65 when cold and you'll be set. You wouldn't have to worry about heat causing excess pressure in the tires unless you were exceeding the speed rating or weight rating. I attached a help article on trailer tires for you to check out as well.
    view full answer...
  • How to Pick Out Trailer Tire Size
    82N is not a tire size. Is there any other numbers you can get off the sidewall of the tire? I attached a picture that shows what a size normally looks like on a trailer. The number you referenced is partially related to the speed rating.
    view full answer...
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  • At What Age Should Trailer Tires be Replaced
    Trailer tires should be replaced about every 6 or 7 years, even if the tread is still in good shape. As tires age, they can crack and dry rot. Continuing to use the existing tires would be dangerous. Let me know what size you have now and I can give you our best option. If you need a 175/80R13 then the part # AM10210 would be a great option.
    view full answer...
  • What is the Diameter of a B78-13 Trailer Tire
    The B78-13 tire size, the modern equivalent of which is a 175/80-13, has a 24.1 inch diameter. This can vary slightly from one manufacturer to the next so you might see one that is 23.9 or 24.3. I have included a link to our handy tire size help article for you.
    view full answer...
  • Recommended 13 Inch Trailer Tires for 20 Foot Pontoon Boat Trailer
    Based on the information you provided, an ST175/80R13 tire should work great on your pontoon boat trailer. The Kenda Karrier ST175/80R13 Radial Trailer Tire # AM10210 that you were looking at is a great choice. It features a maximum load of 1,610 pounds at 65 psi (Load Range D) which will give you a combined capacity of 3,220 pounds if you have a single axle trailer (2 tires). Its 81 mph speed rating will also allow you to comfortably travel the speed limit as you make your way through...
    view full answer...
  • Will Different Tire Sizes between Truck and Trailer Cause a Bumpy Ride
    No, the tire size difference between the truck and trailer would not cause you to have a bumpy ride. Was the trailer empty when you experienced the bumpy ride? If so that would be the issue. A lack of weight on the trailer means the suspension won't compress or travel and it will feel stiff, bumpy, or bouncy. If it is happening when the trailer is loaded make sure that you are not overloading the trailer and that the suspension is not worn out. If the springs are flat and/or the suspension...
    view full answer...
  • Load Range D 8 Ply Radial Trailer Tire Size 175/80-13
    We do carry an 8 ply 175/80 R13 size trailer tire but unfortunately not 10 ply. The one we have is part # AM10210 that has a maxium weight capacity of 1,610 pounds when inflated to 65 psi. It also has a speed rating up to 81 mph. I've linked a video review on the tire too. I've linked our selection of 8 ply, Load Range D tires mounted on different wheels for you to take a look at as well.
    view full answer...
  • Trailer Tire Needed that Fits a 13 Wheel and Has a High Speed Rating
    For a trailer tire that fits a 13" wheel I recommend the Kenda Karrier # AM10210. This is a ST175/80R13 Radial Trailer Tire that has a load range of D (1,610 lbs at 65 psi) and a speed rating of M (81 mph). This tire fits 13" x 4-1/2", 13" x 5" and 13" x 5-1/2" size wheels. Most trailer tires have a speed rating that only reaches 65 mph. The 81 mph speed rating is the highest for this tire size. Since you need 2 of these per axle that puts the load rating at 3,220 lbs which is more than...
    view full answer...
  • Can a ST175/80-13 Tire Be Used in Place of a ST185/80-13 Tire
    I do have an option for you but we only offer a ST185/80-13 tire in a bias ply construction. This is not a very common size so I suggest using a ST175/80-13 tire instead which is offered in a radial ply construction. A ST175/80-13 tire will be .7" smaller in diameter and .4" smaller in width than a ST185/80-13 tire therefore will most likely work in place of one another. For this, I recommend the Karrier Radial Trailer Tire part # AM10210 which has a load range D (1,610 lbs per tire)...
    view full answer...
  • Is a 175/80R13 Spare Tire Compatible with Trailer Tires Size 185/80R13?
    The 175/80R13 will have a 24 inch diameter, whereas the 185/80R13 tires will have a 24.7 inch diameter. It is not recommended to use the different diameter tires as the tire wear and load will not be evenly dispersed and can lead to issues. I recommend using a spare with not only the same tire size but also with the same load rating. Even with a spare tire, you should always use tires of the same size, load range, and construction on a trailer. If you use tires that don't match, you...
    view full answer...
  • How to Pick Out Trailer Tire Size for Boat Trailer
    I would recommend sticking with the same size you currently have on your 1988 Escort boat trailer as we do not have a way to look up what the trailer was built with. The easiest way to determine the size you have is to check out the lettering on the sidewall of the tire. I attached a picture of what the size will look like. I also attached a few trailer tire FAQs for you to check out. Once you know what size you need check out the link I attached that will take you to a page that has...
    view full answer...
    Image 1 for
  • Can a 175/80-R13 Tire Be Used in Place of a 175/80-D13 Tire on a Trailer
    Yes, you can run a 175/80-R13 tire on a trailer that came with a 175/80-D13 tire. The only difference between the two is that "R" stands for radial ply and "D" stands for diagonal. For a replacement 175/80-R13 tire, I recommend the Karrier Radial Trailer Tire part # AM10210. Kenda tires are a top of the line option. This tire has a load range D (1,610 lbs per tire) with a 81 mph speed rating which is one of the highest we offer. It also comes with a 2-year warranty. I have attached a...
    view full answer...

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