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Kenda KR25 Radial Trailer Tire with 12" Aluminum HWT Black Wheel - 4 on 4 - Load Range D

Kenda KR25 Radial Trailer Tire with 12" Aluminum HWT Black Wheel - 4 on 4 - Load Range D

Item # AM31208HWTB
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Shipping Weight: 23 lbs
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Radial tire has a ply rating of 8 and a 1,220-lb maximum load at 65 psi. The 12" diameter x 4" wide aluminum trailer wheel with black interior features a 4 on 4 bolt pattern and is corrosion resistant. Lowest Prices for the best trailer tires and wheels from Kenda. Kenda KR25 Radial Trailer Tire with 12" Aluminum HWT Black Wheel - 4 on 4 - Load Range D part number AM31208HWTB can be ordered online at etrailer.com or call 800-298-8924 for expert service.
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  • Reviews (344)
  • Q & A (13)
  • Photos
  • Why etrailer?

Kenda Trailer Tires and Wheels - AM31208HWTB

  • Tire with Wheel
  • 12 Inch
  • 4 on 4 Inch
  • 145/80-12
  • Load Range D
  • Aluminum Wheels
  • Boat Trailer Wheels
  • Radial Tire
  • Kenda

Radial tire has a ply rating of 8 and a 1,220-lb maximum load at 65 psi. The 12" diameter x 4" wide aluminum trailer wheel with black interior features a 4 on 4 bolt pattern and is corrosion resistant.


  • 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 - 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
  • Aluminum wheel is durable and rustproof
    • Attractive split-spoke pattern
    • Black interior is unique and visually appealing
  • Front and back of wheel are clear coated
  • Tire-and-wheel assembly meets Department of Transportation specifications


  • Rim dimensions: 12" diameter x 4" wide
  • Bolt pattern: 4 on 4"
  • Wheel capacity: 1,220 lbs
  • Wheel bolt size: 1/2"-20
  • Offset: 0
  • Pilot diameter: 2.80"
  • Tire size: ST145R12
    • Section width: 5.7"
    • Outer diameter (when inflated): 21.3"
  • Tire capacity:
    • Load range: D
    • Ply rating: 8
    • Maximum load: 1,220 lbs at 65 psi
  • Maximum speed: 81 mph (speed rating M)
  • Warranty:
    • 5-Year on tire
    • Lifetime against structural defects 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"

31208HWTB Aluminum HWT Series S5 Trailer Wheel Black and Karrier KR25 Radial Tire - LR D

Customer Reviews

Kenda KR25 Radial Trailer Tire with 12" Aluminum HWT Black Wheel - 4 on 4 - Load Range D - AM31208HWTB

Average Customer Rating:  4.9 out of 5 stars   (344 Customer Reviews)

Radial tire has a ply rating of 8 and a 1,220-lb maximum load at 65 psi. The 12" diameter x 4" wide aluminum trailer wheel with black interior features a 4 on 4 bolt pattern and is corrosion resistant.

- AM31208HWTB

This tires are great. I did a little over 7000 miles last year still look new. track great. 407074

- AM31208HWTB

These wheels and tires are great looking and with a D rating, I couldn't pass them up. Now I need to get wheel locks!! Great value and great customer service. Thanks 938289

- AM31208HWTB

The tires and wheels look way more appealing than I anticipated. I haven't had a chance to put them on the road yet other than to make sur they fit. They are going on a Dutchmen tent trailer that is getting renovations. I will send pictures of the finished trailer in the near future. (The tie and wheel look so good, that I will be ordering another soon for the spare.) Extremely pleased!!! 935424

- AM31208HWTB

Looks great, handles even better than they look... 933659

- AM31208HWTB

Great customer service 918282

- AM31208HWTB

Very quick delivery. They seem like good quality and look very good. Here are before and after photos. 872509

- AM31208HWTB

Cool rims match my car 854779

- AM31208HWTB

Tires and rims look great on my little boat trailer. The tires are larger than my old ones that were in really bad shape and fit great. It really updates the look of a 20 year old trailer and sail boat! 854639

- AM31208HWTB

Everything was exactly as advertised. Product arrived when expected, packaging was intact and adequate for what was in the box. Sales rep did an excellent job, was knowledgeable and friendly. Definitely will be using etrailer.com for all my trailer needs going forward. 829800

- AM31208HWTB

These were the perfect solutions for me, they look awesome and have had no issues 825068

- AM31208HWTB

These tires were the perfect replacement for my old outdated cracked tires. The money I spent has eliminated my fear of a blow-out that was always on my mind with the old ones. Great service and rapid shipping; no complaints here! 809155

- AM31208HWTB

Fast shipping, perfect fit looks great on boat. 746281

- AM31208HWTB

To dress up my pull-behind motorcycle trailer, I purchased these wheels, tires and lugnuts. The trailer looks awesome and tows perfectly. I would definitely purchase these again. 661087

- AM31208HWTB

Awesome informative website, provided everything that I needed to make the right decision. I just came back from a 2700+ mile trip to fish the Kayak Bass Fishing National Championship and my kayak trailer tracked perfectly. At times I would forget it was back there. My order was confirmed and shipped within a short time and received in just a few days. I will be a return customer. 617853

- AM31208HWTB

We are extremely pleased with our wheels and tires purchased from you for our bike trailer. Looking forward to many trips and miles with peace of mind. The workmanship is excellent and service superior!!! We recommend your company highly!!!! 546719

- AM31208HWTB

I upgraded my my old wooden fishing boat wheels and tires. Great product - great service. 542760

- AM31208HWTB

Fast service, great customer service. 516033

- AM31208HWTB

Finished product with wheels and tires purchased from etrailer. Extremely pleased with your products and service. Thank you. 408162

- AM31208HWTB

Great products,extremely pleased. 329716

- AM31208HWTB

I have had good luck so far with the ones I bought previously,quick delivery again always make it easy to buy and good product 324841

- AM31208HWTB

After an number of blowouts with Bias Ply load range C tires on our Pop Up, we switched to these Radials rated at load range D - and have zero issues over 10k miles towing. They hold air pressure longer, ride/tow better, and show little wear after a busy season of towing in all conditions - from 100deg in the desert to -15deg @11,000'+ elevation. 6500 mile cross country trip with no issues, and no loss of air pressure over the trip... 310811

Great - Tires now have about 15k with zero issues.
John H - 10/26/2017


- AM31208HWTB

Great upgrade to trailer, well worth the money 309900

- AM31208HWTB

The tires and wheels look great. Just have to see how they look on my Escapade cargo trailer. It is being repainted to match my 2015 Black and Red Goldwing. I may paint the shiny parts red or black. 285289

- AM31208HWTB

The wheels are gorgeous. I know this wheel and tire combo will add greatly to the appearance of my teardrop trailer. As usual, the shipping and packaging from etrailer.com was outstanding. 160606

- AM31208HWTB

Nice looking wheel and tire combo. Very pleased with the product. Shipping was fast. 97882

Show More Reviews

Ask the Experts about this Kenda Trailer Tires and Wheels

  • Should Factory Bias-Ply Tires Be Replaced With Kenda # KR25 Radial Tires
    Yes, replacing your bias ply tires for Kenda KR25 # AM31208HWTB is a good move with regard to the safety of your cargo trailer and you on your motorcycle. As long as your radial tires are properly inflated, the radial tires will have improved traction and better tread wear which in turn will give you a more stable ride. The main difference between bias ply and radial tires is the construction of the tire and the usage applications. Bias ply tires have stiffer sidewalls and might be used...
    view full answer...
  • Trailer Tires Keep Blowing Out on a Boat Trailer
    Part # AM31208HWTB is our part number for the Kenda KR25 tire mounted on the HWT Aluminum wheel. There are several reasons why a trailer tire could fail. Since you mentioned the trailer is not overloaded we can rule that out. You also mentioned high speed trips. Few if any 12 inch trailer tires are rated for higher speeds than 65 miles per hour. The faster you go, the more heat is generated. Heat is the number one enemy of the tire. Trailer tires are also made with a thicker sidewall...
    view full answer...
  • Recommendation on Lug Nuts to Fit Aluminum Wheel and Tire Combo
    The Chrome Trailer Wheel Lug Nut, # 12CLN, will work well with the # AM32108HWTB that you purchased. This lug nut is 1/2 inch-20 threads per inch. These lug nuts are chrome to give a nice aesthetic look with your wheels and to help resist rust.
    view full answer...
  • 12 inch Trailer Wheel and Tire with over 80 MPH Speed Rating
    The speed rating of the tire on the part # AM31208HWTB is 65 mph. In the 12 inch wheel diameter there are only tires rated for 65. If you can go up a size then you can get into the higher speed ratings unless you want to go bias with a Taskmaster part # TTWAS53012WS45HP which has an 81 mph speed rating.
    view full answer...
  • Center Cap Recommendation for the Kenda KR25 Radial Trailer Tire with HWT Black Wheel # AM31208HWTB
    I checked your order notes and it looks like you purchased the Kenda KR25 Radial Trailer Tire with 12" Aluminum HWT Black Wheel # AM31208HWTB that has a pilot diameter of 2.80 inches. The only center cap we offer that would fit that pilot diameter is the part # AM90113. This cap does not have a removable center section though. Also the center caps that we offer that have the etrailer.com sticker on them are not what we ship to our customers. We put the sticker on the cap to help...
    view full answer...
  • What Is The Speed Rating Of Kenda KR25 Radial Trailer Tire W/ 12" Aluminum HWT Wheel AM31208HWTB
    The Kenda KR25 Radial Trailer Tire with 12" Aluminum HWT Black Wheel # AM31208HWTB you mentioned has a speed rating of 81 mph and will work great at highway speeds. I included a video of the Kenda # AM31208HWTB for you to take a look at.
    view full answer...
  • Wheel and Tire Combination Recommendation to Replace 155/80-12 Trailer Tire Size
    The closest available tire size to your 155/80R12 is the 145/80-12 tire size. The part # AM31208HWTB that you referenced has a 4 on 4 inch bolt pattern like you would need plus the correct tire size.
    view full answer...
  • 4.80-12 Trailer Tire and Wheel Recommendation for Tear Trailer
    For a high-quality trailer tire that is size 4.80-12 and wheel with a 4 on 4" bolt pattern I strongly recommend the Kenda KR25 ST145R12 Radial Trailer Tire with 12" Aluminum Wheel # AM31208, which is also available with different wheels, either # AM31208HWT for an Aluminum HWT Wheel or # AM31208HWTB for an Aluminum HWT Black Wheel. Each of these wheel and tire combos are load range D tires with a capacity of 1,220 lbs when inflated to their max 65 psi. Since you mentioned highway you...
    view full answer...
  • How to Determine if 145R12 Trailer Tire with 5 on 4-1/2 Bolt Pattern Fits Harbor Freight Trailer
    To answer your first question, radial tires are superior to bias tires because they run cooler and are less prone to blowouts. The only reason to run a bias tire is if you do a lot of agricultural or off-road work. In regards to fit, the Kenda ST145R12 Radial Trailer Tire w/12" Aluminum HWT S5 Black Wheel - 5 on 4-1/2 - LR D # AM31206HWTB may your Harbor Freight trailer, but there are a couple things you need to know first, starting with your trailer's bolt pattern. This wheel has a...
    view full answer...
  • Wheel and Tire Recommendation, ST145R12 Size with a 4 on 4 Bolt Pattern
    The only wheel and tire combinations we offer for the ST145R12 size and 4 on 4 inch bolt pattern you listed are on aluminum wheels and are not load range E. Check out the Kenda KR25 ST145R12 Radial Trailer Tire and Wheel # AM31208 and the Kenda KR25 Radial Trailer Tire and Wheel # AM31208HWTB. The Kenda Tire # AM10140 that you referenced is a load rang E, but we do not have a 4 on 4 inch wheel with the same capacity as most 4 on 4 inch hubs have capacities near 2,000 lbs. While these...
    view full answer...
  • Trailer Wheel and Tire Recommendation to Replace 155/80R13 with Only 1 inch Fender Clearance
    Having only an inch of fender clearance with a smaller than standard 13 inch trailer tire size would indicate you need something smaller as that's not enough clearance. You'd need to go with something a couple inches smaller in diameter like the part # AM31202 for if you have a 5 on 4-1/2 inch bolt pattern or # AM31208HWTB if you have a 4 bolt pattern.
    view full answer...
  • ST145/80-12 Wheel and Tire Recommendation for a 5.30-12 Wheel and Tire
    The Kenda Karrier ST145/R12 Radial Trailer Tire with 12" Black Mod Wheel # AM35354 will be about 1/2 an inch shorter than your current 5.30-12 tire so it that regard it would work perfectly fine. Now the included wheel is designed to attach to a 5 on 4-1/2 inch bolt pattern hub. If that is what your trailer has this wheel would work great. I attached a help article on determining bolt patterns for you to check out as well. If you had a 4 on 4 inch bolt pattern you would instead want...
    view full answer...
  • Can I Upgrade My Trailer Wheels From 8 Inch To 12 Inch?
    There are a couple factors that play a part in if you are able to swap your tires from 8 inches to 12 inch. If you're running an 8 inch wheel odds are that you have a single axle trailer so that shouldn't be an issue. If you have fenders on your trailer you may need to remove them. If that isn't a problem then you have two bolt pattern options. 5 on 4-1/2 or 4 on 4. Both bolt pattern options will have an overall diameter of 21.3 inches so you can use that to see how much height you...
    view full answer...

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