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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: $130.88
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Trailer Tires and Wheels
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   (5233 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



Absolutely perfect...dependable and have several hundred miles on them now ...and still look new


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


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 ?

Patrick B.


They are typically either manufactured in China or Taiwan.


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



no flats or low tires. so far so good


My order for new tires and rims and other accessories came days earlier than it was supposed to, which made me happy. I did find a damaged item,I contacted them and they were getting a replacement in the mail ASAP. I think their customer service is tops.


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.


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.


Tires look great. Nice to see the rims were made in the USA. Will be making our first trip with the new tires soon


Wonderful customer service! Tires arrived right on time and were exactly what I needed for my trailer!


Put the tires/wheels on pop up camper. About 1000 miles so far, no issues, still looks good and rides smoothly. Good tires.


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.


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.

Tommy X.


Product works as promised. Still rolling after a year with no hiccups.probably can get through two more seasons without changing the tires.


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


Very nice tire and wheel. Was east transaction. Sipped fast. Exactly what I needed.


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.


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.


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.


Great stuff, shipped fast and free, great pricing and quality products.


A high-quality wheel and tire that arrived fast and in excellent condition.


These are great tires and shipping is really fast.


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!


Good product, great service


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


Fast delivery, all as expected


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

Show More Reviews

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

  • How to Distinguish Hub-Centric Trailer Wheels from Lug-Centric Trailer Wheels
    It is easy to tell which type of wheel you have on your boat trailer. Lug centric wheels slide onto studs on the hub and are secured with lug nuts, like a car tire. If a wheel is hub centric, the wheel centers on the hub and bolts are threaded into the hub to secure the wheel.
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  • Can Trailer Tires Be Inflated Past Their Max PSI Rating
    For trailer tires you want to inflate them to their max psi when cold. You wouldn't want to over inflate them as that could cause failure. If you are close to being over capacity you might consider a higher rated tire. The part # AM31985 is the same size as what you have and has a capacity of 1,660 lbs at 65 psi. I attached a review video and a help article on trailer tires for you to check out as well.
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  • How to Read Date Code on Trailer Tire to Determine Age
    The DOT date code on a tire is 4 numbers. The first 2 are the week and the last 2 are the year. So for example if it was 2314 that means that tire was made in the 23rd week of 2014. Based on what you listed I do not believe that is the date code. Look for a 4 digit code of all numbers instead.
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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 Read Age of Tire From DOT Number Printed on Tire Sidewall
    You'll need to look at the last 4 digits of the DOT number on the tire sidewall. For instance if the last 4 digits are 2418, the tire was constructed in the 24th week of 2018. If your trailer tires are 5 or 6 years old and are showing cracks in the sidewalls. I've linked to a trailer tire article that you might find helpful. If you need replacements, just let me know the tire size and load range, which can also be found on the tire's sidewall.
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  • How to Pick Out Best Trailer Tires for a Pop Up Camper
    I don't have access to the tire info for your trailer, but if you can get the size is stamped on the sidewall of the tires that you do have I can give you the best recommendation for that size that we offer. With that info check out the link I attached. If you see your size on the filters click it and the best tires we offer will be listed. The filters are already in place so that you would see all of the radial tires made by Taskmaster that we offer. Radial tires ride and wear the best...
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  • Do Tire/Wheel Combos Come Already Balanced
    The wheel/tire combos we offer are not balanced at the factory. When the tire is mounted to the wheel, the high or heavy spot on the wheel is matched to the low or light spot on the tire, which leaves the wheel and tire somewhat balanced. You can have the wheel/tire balanced if you wish to, but it is not as important to have perfectly balanced tires used for trailers as it is with a passenger vehicle. I have attached a link to a helpful article about tires and wheels you can check out.
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    Image 1 for
  • What Is The Proper Tire Pressure For Special Trailer ST Tires?
    The proper tire pressure for trailer tires regardless of size is the maximum posted psi on the tire. Trailer tires are designed to function best at that max psi. For instance, the Karrier ST175/80R13 Radial Trailer Tire with 13" White Wheel - 5 on 4-1/2 - Load Range D # AM31985 is designed to have it's maximum load capacity at 65 psi. This max capacity is determined by the manufacturer based on the ply rating, the load range, and the tread depth of the tire.
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  • 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...
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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.
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  • Can Camper Trailer Rims be Stored for the Winter Left On the Trailer
    You should be just fine with your tires and rim part # AM31985. Visually inspect them and make sure they are inflated to their max psi rating (65 psi), and you should be good to go. If you were planning on storing the trailer for more than just a winter season I would recommend removing the rims just to help preserve the tires. But for just the winter you would be fine the way you did it.
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  • 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...
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  • 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...
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  • Recommendation For Trailer Tire With Wheel That Fits ST175/80R13
    The Karrier ST175/80R13 Radial Trailer Tire With 13 Inch White Wheel, Item # AM31985, is an excellent tire and wheel combo that will work well for you and your situation. You will not need to balance the wheels before installing and they have a maximum weight capacity of 1,610-lbs at 65 psi. Be sure to keep them at maximum psi to ensure that you have the best stability and safety.
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  • What is the Difference between a Tire Size that Starts with P and ST
    The P in the tire size part p175/80-13 that you referenced indicates that it is for a passenger vehicle and should not be used on a trailer. For a trailer you want to go with a size that starts with ST which stands for specialty trailer. For an ST rated tire in the same size you would want the part # TTWTRTM1758013C. I attached a review video for this tire for you to check out as well.
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  • 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.
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    Image 1 for
  • Is Trailer Weight Included In Weight Capacity Of Tires
    The weight capacity listed for a tire like part # AM31985 is 1,610 lbs at 65 psi, so the weight capacity for 2 tires is 3,220 lbs. That weight does include the trailer and any cargo it is loaded with. The Karrier ST175/80R13 Radial Trailer Tire, part # AM31985 is a load range D tire and has a 13 inch diameter rim with a bolt pattern of 5 on 4-1/2 inches. To make sure you get the best performance out of your tires you should inflate them to their maximum psi. An under-inflated tire can...
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  • 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...
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  • 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.
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  • Replacing Tires and Wheels on a Texture Spray Rig to Reduce Bounce When Towing
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  • How to Determine Correct Replacement Trailer Tire Size
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    Image 1 for
  • Replacement Tire for 1994 Coleman Pop-Up Camper in 205/8-10 Tire Size
    I believe the tire size you are looking for is a 20.5 x 8-10, which is an obsolete tire size. The closest modern tire size would be a 205/65-10. The two sizes would be pretty similar in size, but we highly recommend replacing both tires on an axle at the same time. Having two tires with different sizes (even if they are pretty close) and tread patterns can have a negative effect on how the trailer tracks down the road. You could replace two tires and then save the one your Dad purchased...
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  • 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.
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