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

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

Item # AM31957
Our Price: $120.92
You Save: $103.23
Trailer Tires and Wheels
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Shipping Weight: 31 lbs
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Kenda Tire with Wheel - AM31957
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Radial tire has a ply rating of 6 and a 1,360-lb maximum load at 50 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 w/ 13" White Modular Wheel - 5 on 4-1/2 - Load Range C part number AM31957 can be ordered online at or call 1-800-940-8924 for expert service.
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Kenda Trailer Tires and Wheels - AM31957

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

Radial tire has a ply rating of 6 and a 1,360-lb maximum load at 50 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 modular design by Dexstar
    • 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
  • Pilot diameter: 3.19"
  • Wheel offset: 0
  • Tire size: ST175/80R13
    • Section width: 7"
    • Outer diameter (when inflated): 24.1"
  • Tire capacity:
    • Load range: C
    • Ply rating: 6
    • Maximum load: 1,360 lbs at 50 psi
  • Maximum speed: 81 mpg (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"

31957 Dexstar 8-Spoke 13" White Modular Wheel and Karrier KR03 Radial Tire - LR C

Replaces Americana 31957DX

Customer Satisfaction Score:

Customer Reviews

Karrier ST175/80R13 Radial Trailer Tire w/ 13" White Modular Wheel - 5 on 4-1/2 - Load Range C - AM31957

Average Customer Rating:  4.8 out of 5 stars   (3961 Customer Reviews)

Radial tire has a ply rating of 6 and a 1,360-lb maximum load at 50 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.


Exactly what I ordered. It was backordered, but came in earlier than expected. Great customer service and they kept me informed. Thank you. Look forward to hitting the road with my new wheels and tires.

Working great after 1 year, after taking the camper out of state and into the mountains with no issues, very pleased.
Randy W - 04/27/2022


Tires were shipped in nice sturdy boxes and fit perfectly on new hubs I installed on a recent trailer purchase. Previous owner had the wrong size wheel and tires with an even smaller spare. Now I have all matching.


This is the only place to go on the internet for anything trailer related. Best parts and accessories and free shipping. Can't beat that...


Great tire and rim package. Also great customer service. The tires were out of stock temporarily and they followed up to make sure that the tires would arrive in time for my snowmobile trip.


Great value


After 10 or so short trips the tires are holding up excellent. However I can not comment on long term or highway speed performance. The tires are not as stiff or thick as the old bias ply tires they replaced, but they seem to be more stable laterally and still absorb more bumps so a definite improvement over my old bias ply tires. On a dual axle 24' pontoon boat trailer.

Bias Ply tires do indeed have a stiffer sidewall, but radial tires do a better job of shedding heat. This makes radials ideal for the higher speeds encountered on the highway. Excessive heat is one of the main contributors to premature tire failure, which is why we will just about always recommend choosing radial tires if the choice is available in the size you need.
-- Etrailer Expert Mike L - 09/27/2018


Shipping was prompt, tire and rim were exactly as ordered.


Great product fit as expected. Only issue was ordered from instock tag on website and two days later get the dreaded backordered from manufacturer. Since I did not need immediately that was fine as it only took a little over three weeks to be delivered. Shipped and packed great would definitely buy again. Received several emails keeping me informed. Have bought several other items from etrailer and always pleased with the service shipping and packing!

One year later out on about 6000 miles they are doing great! Stays parked in box nc salt air and no that unlike the old boss tires. Very happy with etrailer.
Ricky B - 07/28/2018


Looks great, it was the perfect replacement for my trailer. Went on easily.


Haven't put the tires on yet but they look great. Nice finish on the wheels. As always, top quality products and excellent service from etrailer.

Awesome! Ive put on about 100 miles since getting these. These radials get less heated from high speeds and give a much smoother ride in the tow vehicle. Switch to radial trailer tires if youre on the highway a lot and buy them here!
Jerry F - 02/17/2015


The tire/wheel combo looks good and was packaged perfectly. But, the reason I purchased this from was for two reasons, price and customer service. The price was half of what local retail shops were selling for. Customer service is top notch at etrailer. I had placed my order in hopes to receive the items that week. Unfortunately, it was apparent early on that it would not make it before my hope to arrive date. I was contacted by George J. immediately and was given an explanation for the delay and that efforts were being made to fulfill my order. I was then contacted by Ahren J. who offered other options and similar products that would ship out immediately. I stayed with my original item and it arrived as predicted. I've read tons of reviews on etrailer's customer service and how good it was and George and Ahren lived up to the reviews. Thank you! I will definitely use for furture purchases.


I put these tires on my pop camper last year and they have far exceeded my expectations. great price, shipped quickly, and have made hauling my camper a much smoother ride.
very easy to use website, just select your year make and model and the sight takes the guessing work out of it and you get exactly what you need.
I will definitely by my next set of tires from here again.


Exactly what I needed to upgrade my 'may pop' tires and rusted wheels on my utility trailer. Was wanting a load range C trailer tire, and none of the local box stores could touch this. Great trailer tire and wheel combo, good price and delivered to my door.


tires came ready to use. pressure was spot on, and used them to day trailer tracked great and smooth, great tire at interstate speed. but I don't believe they helped me catch my limit of fish today but you can never know for sure. Great customer service and will recommend etrailer.


Mounted up easy & gets the spare just out of the way of the folding down salt shield on my Aluma 8616 snowmobile trailer. Had to move everything ahead so that the mount was making contact with the coupler but it works.




The site is super easy to use and I got exactly what I ordered sooner then
it was scheduled


I may not use these right away. My annual camping trips usually run 1000+ miles. I have had near failures in the past but lucked out 3 different times I 40 I80 I25 by inspecting at every stop and finding cracked side wall. Thanks to smart phones I found replacements before blowouts.

current tires are 4 years old low mileage garage parked so I plant to use one more trip before putting them ( unless I have to) 3 spares with 2 new I ll be ready. 1999 coleman 20 ft popup probably should have had higher load rating


I am putting them on an enclosed Chariot Motorcycle trailer, They look good though there is a slight defect in the paint on the backside of one wheel. Time will tell how they perform and hold up.


After one year stored outside without any covers and they still look great


Parts always come quickly and at a reasonable price. Haven’t needed the spare tire for my car dolly yet (thankfully), but it’s there when I do.
Thanks for the good service!


Was very happy with tires and wheels. I ordered on Friday and they were delivered on Tuesday, great company to work with.These tires are going on my boat trailer.


The communications was great and the delivery time was superior. Thank you guys at for such a pleasant experience !


Nice looking tires work great on my small boat trailer. shipping was fast


The tires I ordered were priced right and were delivered immediately!

Thanks etrailer.

Show More Reviews

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

  • Does the Karrier ST175/80R13 Wheel and Tire Combo # AM31957 Have 10 Round Holes
    The wheel in the Karrier ST175/80R13 Radial Tire and Wheel Combination, # AM31957, comes with the 10 round holes, not a spoke pattern. The pictures you see on our product page are actual photos of the tire and wheel that we took in our photo studio. We had this wheel in stock, so I pulled it from our warehouse and made a short video for you.
    view full answer...
  • Are The Trailer Tire And Wheel Combination Balanced
    The trailer tire and wheel combination 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. I would recommend to balance the tire and wheel combination at a local...
    view full answer...
  • Trailer Tire Recommendation to Replace a ST165/80D13
    You should have no problem going with a ST175/80D-13 over a ST165/80D13. The tire will only be about 10 mm's wider and 16 mm's taller. You might double check your clearances if they are close, but most likely you would have the necessary clearance for the additional width and height. If so, the Karrier ST175/80R13 Radial Trailer Tire w/ 13" White Modular Wheel # AM31957 should work well for you as long as your bolt pattern is 5 on 4-1/2. I attached an FAQ on determining bolt patters for...
    view full answer...
  • What is the Speed Rating for Karrier ST175/80R13 Radial Trailer Tire w/ 13" White Modular Wheel
    All of the trailer tires that we carry are rated for 65 miles per hour. This is regardless of construction (radial or bias). But I do recommend radial tires because they run cooler and track better than bias ply tires. Bias ply tires are better for off road applications where you would be doing most of the travel off the beaten path. I have included a link to our help article on trailer tires for you.
    view full answer...
  • Economical Spare Tire and Wheel With 5 on 4-1/2 Bolt Pattern and 175/80R13 Tires
    I would be happy to help you out but I need some more information about the bolt pattern and size of your wheel. I've added a link for you on how to measure for bolt pattern, and the size will be the diameter of the wheel. I assume the wheel is 13 inches but just wanted to check and make sure. I would still need to confirm the bolt pattern as well. If you can get back to me with that information I'll be happy to let you know your best option.
    view full answer...
  • Replacing P165/80-13 Tires on Trailer With Larger Size
    Neither tire size you mention is a trailer tire size. Could you have meant 175/80-13 which is a trailer tire size? Your current 165/80-13 tires are about 23.39 inches in diameter and 6.50 inches in width. Switching to the 175/70-13 would give you a shorter, wider tire at 22.64 inches in diameter and 6.88 inches in width. When changing tire sizes, you'll want to be mindful of the clearance between the tire and the underside of the fender or the underside of the trailer. You'll want to see...
    view full answer...
  • Can an ST175/80D13 Tire Mount on a 13 Inch Modular Wheel
    Yes, you can put a ST175/80D13 tire on a modular wheel. That tire size requires a 13 inch wheel that is either 4-1/2, 5, or 5-1/2 inches wide. You can use our Americana Steel Mini Mod Trailer Wheel, # AM20253, assuming the bolt pattern of your hub is 5 on 4-1/2. I have attached a help article that explains how to find your bolt pattern. This wheel will work with radial or bias ply tires and as long as the bolt pattern is compatible, you will not have a problem.
    view full answer...
  • How to Choose Correct Load Range for Trailer Tires
    Your calculation is correct. If you have four tires on your 4500 lb trailer, each tire would have to be rated for at least 1125 lbs. When looking for replacement tires for your trailer, there are a couple things you want to consider. If we use the weight of the trailer as our first determining factor, we can narrow it down to a 175/80-13 (1,360 lbs max load at 50 psi) or 185/80-13 (1,610-lb maximum load at 65 psi) radial tire/wheel. These are available only on 5 on 4-1/2 inch bolt pattern...
    view full answer...
  • Are Trailer Tires Available Already Mounted on a Wheel
    It's not a stupid question at all! In this instance, you can obtain the 13 x 4-1/2 white powder coated wheel with a 5 lug on 4-1/2 inch bolt circle individually as part # AM20253, the ST175/80R13 Load Range C tire individually as part # AM10199 or the tire already mounted on the wheel as part # AM31957. The wheel/tire combos aren't machine balanced when we receive them, nor do we have the necessary equipment here to do that but you could have the tires balanced locally if you wish. Because...
    view full answer...
  • Can 12 Inch Wheels And Tires Be Replaced With 15 Inch Wheels And Tires On A Utility Trailer
    When switching from 12 inch wheels to 15 inch wheels you will want to make sure that you have the clearance needed for new tires and wheels. Going from 12 inch wheels to 15 inch wheels will raise the trailer substantially. The 12 inch tires we sell range from about 20 to 22 inches in diameter. The Kenda Karrier # AM10140 has an outer diameter of 21.3 inches. If you put 15 inch tires on your trailer the diameter can range from 27 to 28-1/2 inches. The Karrier ST175/80R13 Radial Trailer...
    view full answer...
  • Compatibility of 13 Inch Trailer Tire and Wheel Combo for Trailer Currently Running 8 Inch Tires
    It is true that 8 inch tires will have more revolutions than larger tires which will wear down the tires and bearings slightly faster. The biggest thing to consider in moving up tire sizes is the changes it makes to the trailer. It will raise the trailer higher off the ground, it will limit your clearance for your suspension to move properly, and most of the time the larger tires are also a different width which can also be an issue on some trailers. Moving from 8 inch to 13 inch is...
    view full answer...
  • Can Trailer With 12 Inch Tires Upgrade to 13 Inch Tires
    You can upgrade to larger tires but you will need larger wheels and also ensure you have the right amount of clearance. With trailer tires, the general rule of thumb is you want at least 3" of clearance from the top of the tire to your fender and at least 1" of clearance between the inside of the tire and your trailer's frame rail. For example, the Karrier ST175/80R13 Radial Trailer Tire w/ 13" White Modular Wheel - 5 on 4-1/2 - Load Range C # AM31957 measures 24.1" in diameter and 7"...
    view full answer...
  • Can Radial Tires And Bias Tires Be Ran Together On The Same Trailer
    When towing a trailer you should always match the same tire type on all four tires of your trailer regardless of which tire you choose. I would recommend going with a radial tire like The Karrier ST175/80R13 Radial Trailer Tire # AM31957. Radial tires are more for highway use and will get better life out of them. This tire has a load range C with a ply rating of 6. It has a maximum weight capacity at 1,360 pounds at 50 psi. It has a maximum speed rating of 81 mph which is a speed rating...
    view full answer...
  • Replacement 5.30-12 Radial Tires For Utility Trailer
    We have the perfect replacement 5.30 Radial tire for your utility trailer! The Taskmaster 5.30R12 Radial Trailer Tire # TT53012C it has a ply rating of 6 and has a maximum load rating of 1,050 pounds at 80 psi. The Taskmaster brand has a quality reputation and the Provider line is their premier option. This tire has a maximum speed rating of 81 mph. I attached a review video link below.
    view full answer...
  • Availability of Load Star ST175/80-13 Radial Trailer Tire on a White Painted Wheel
    I took a look at your order history, and the last tire purchase I saw was a 185/80-13 bias-ply load range D tire purchased back in 2010. This is part # AM1ST79, and was purchased as a tire only, not a wheel/tire combo. For a 175/80-13 radial tire load range C on a white painted wheel, we offer the Karrier Loadstar # AM31951 which is an 8 spoke white trailer wheel with a 5 lug on 4-1/2 inch bolt pattern. For the same tire on a white painted modular wheel with the same wheel bolt pattern,...
    view full answer...
  • Will Kenda 175/80-13 Loadstar be Able to Hold Weight of 1983 Calkins Boat Trailer with Boat
    If your 1983 Calkins boat trailer is rated for 2,375 lbs GVWR (Gross Vehicle Weight Rating) then the Loadstar ST175/80D13 Bias Trailer Tire # AM3S140, which has a load range C (1,360 lbs at 50 psi), will be able to handle the weight. I am not sure how much your whole setup weighs so it might be best to take it by a weigh station just to be sure you know how much it all weighs. You are correct that automobile tires are not suited for trailer usage and so switching the correct tire/wheels...
    view full answer...
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  • I Want a Larger Tire for my Coleman Pop Up Camper That has Tire Size 4.80/4.00-8
    We have what you're looking for. Depending on the amount of room that you have is going to determine the size you can go up to. The original tire that you have like the Kenda 4.80/4.00-8 Bias Trailer Tire part # AM30060 is about 16.1" Tall and 4.6" wide. The first notable step up would be a Kenda 215/60-8 Bias Trailer Tire part # AM3H325 which is about 18.3" Tall and 8.9" Wide. This one is significantly wider than you current tire but just slightly taller. For a good increase in height...
    view full answer...
  • Availability of Kenda 175/80-13 Radial Trailer Tire With a Silver Mod Wheel
    Currently the only radial tires we carry in the 175/80-13 from Kenda are the KR03 in a Load Range C # AM10199 or D # AM10210. And we do not have have any wheel and tire packages with either of these tires and the Vesper Steel Modular Trailer Wheel # TA53RR. We do have the KR03, load range D in a Black # AM31990 or White # AM31991 Mod wheel as well as a load range C in a White # AM31957 Mod wheel. Otherwise you can take the above wheel and tire of your choice to a tire shop to have them...
    view full answer...
  • Trailer Tires Rated to Drive at Highway Speeds
    You are correct about the speed ratings, though it is often recommended not to drive faster than 65 mph because higher speeds will cause heat to build up in the tire and cause a failure. With increased speed comes an increased chance of a blowout. The item you referenced, # AM31957, is a wheel and tire combination. It uses a Kenda ST175/80R13 tire with a speed rating of M, or 81 mph. It is for 13" diameter x 4-1/2" wide wheels with a 5 on 4-1/2 bolt pattern. If you were interested in...
    view full answer...
  • Spare Tire and Wheel Recommendation for 175/80-13 Tire and 5 on 4-1/2 Bolt Pattern
    For a spare tire for your trailer you will want the tire to be the same size and construction type. In this case you will need an ST175/80R13 radial tire in load range C. In terms of the wheel a regular steel wheel will cost less and is perfect for a spare tire. Since you need a 5 on 4-1/2 bolt pattern I recommend tire and wheel combo # TTWA13RWS if you want the tire to be the same brand. Or if you want the least expensive option go with # AM31957. I have linked video reviews of both...
    view full answer...
  • Will a 175/80R13 Tire Fit a 12 Inch Wheel
    A 175/80R13 tire will not fit a 12 inch wheel like you have, so if you want to keep the wheel, you will need a tire that fits a 12 inch wheel. Otherwise, if you are looking to upgrade the tire size, you will also need to replace the wheel. So for a 12 inch wheel, the tire you can use is the Taskmaster 4.80R12 Radial Trailer Tire # TT48012C, so long as its 990 lb capacity per tire is appropriate for your trailer. Otherwise, since it looks like you have a 5-bolt pattern, you can upgrade...
    view full answer...
    Image 1 for
  • Spare Tire Recommendation for a ST175/80D13 Wheel and Tire
    Since you have bias ply tires currently on your trailer I would recommend you stick with a bias ply as a spare. The part # AM31957 would work for you as it is the same tire size and bolt pattern even though the rim is 1/2 inch thinner. Instead I would recommend the part # AM3S050 as it comes with a bias ply tire like what you have. I attached an FAQ on trailer tires for you to check out as well. For a spare tire carrier you might also be interested in the CE Smith Spare Tire Carrier...
    view full answer...
  • Recommended Brakes, Drums, and Tires for 2990 GVW Trailer
    For your trailer axle, the Electric Trailer Brake Kit - Self-Adjusting - 10" - Left and Right Hand Assemblies - 3,500 lbs # AKEBRK-35-SA are a great choice. After the initial adjustment at installation, they will self-adjust to maintain proper braking. These assemblies will be labeled so you can install them on the proper side of your trailer. Left hand is driver's side, right hand is passenger side. I recommend using # 10-1-1 for your wiring to your brake magnets and the etrailer 7-Way...
    view full answer...
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