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Kenda 4.80-12 Bias Trailer Tire with 12" Galvanized Wheel - 4 on 4 - Load Range B

Kenda 4.80-12 Bias Trailer Tire with 12" Galvanized Wheel - 4 on 4 - Load Range B

Item # AM30550
Our Price: $78.98
You Save: 38%
Trailer Tires and Wheels
Shipping Weight: 18 lbs
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Kenda Tire with Wheel - AM30550
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Bias tire has a ply rating of 4 and a 785-lb maximum load at 60 psi. The 12" diameter x 4" wide steel trailer wheel features a 4 on 4 bolt pattern and a corrosion-resistant galvanized finish. Great Prices for the best trailer tires and wheels from Kenda. Kenda 4.80-12 Bias Trailer Tire with 12" Galvanized Wheel - 4 on 4 - Load Range B part number AM30550 can be ordered online at or call 1-800-940-8924 for expert service.
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Kenda Trailer Tires and Wheels - AM30550

  • Tire with Wheel
  • 12 Inch
  • 4 on 4 Inch
  • 4.80-12
  • Load Range B
  • Steel Wheels - Galvanized
  • Boat Trailer Wheels
  • Bias Ply Tire
  • Kenda

Bias tire has a ply rating of 4 and a 785-lb maximum load at 60 psi. The 12" diameter x 4" wide steel trailer wheel features a 4 on 4 bolt pattern and a corrosion-resistant galvanized finish.


  • Trailer tire by Kenda is designed for excellent handling at high speeds
  • 8-Spoke steel wheel is galvanized to resist rust
  • Tire-and-wheel assembly meets Department of Transportation specifications


  • Rim dimensions: 12" diameter x 4" wide
  • Bolt pattern: 4 on 4"
  • Wheel capacity: 1,250 lbs
  • Wheel bolt size: 1/2"-20
  • Pilot diameter: 2.84
  • Offset: 0
  • Tire size: 4.80-12
    • Section width: 4.8"
    • Outer diameter (when inflated): 20.5"
  • Tire capacity:
    • Load range: B
    • Ply rating: 4
    • Maximum load: 785 lbs at 60 psi
  • Warranty:
    • 5-Year on tire
    • Limited 2-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.

Bias Tires vs. Radial Tires

Bias vs. radial tire graphic

Bias ply tires are designed for off-road or agricultural applications. They are built with thick, durable nylon cords that are positioned at a 30- to 45-degree angle to the direction of travel. The layers alternate in a crisscross pattern, making the sidewalls stiffer so that the entire tire is able to flex easily. As a result, the tire provides a smooth ride and improved handling when trailering on uneven surfaces.

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"

30550 8-Spoke 12" Galvanized Wheel and Kenda K353 Bias Tire - LR B

Customer Satisfaction Score:

Customer Reviews

Kenda 4.80-12 Bias Trailer Tire with 12" Galvanized Wheel - 4 on 4 - Load Range B - AM30550

Average Customer Rating:  4.8 out of 5 stars   (6003 Customer Reviews)

Bias tire has a ply rating of 4 and a 785-lb maximum load at 60 psi. The 12" diameter x 4" wide steel trailer wheel features a 4 on 4 bolt pattern and a corrosion-resistant galvanized finish.


I bought two of this tire/wheel combo for my trailer to replace what came with it originally. etrailer had the best price and the tires arrived within a couple days of placing my order.


Fast shipping great fit loved it. Will be shopping with you guys again



Everything is working fine Ive put some miles on the tires and they still look like the day I received them


Items were just as described, fairly fast shipping (arrived 3 days after estimated delivery date). Overall it was a positive experience shopping with etrailer.


nice tires/wheels, quick shipping.

price to local stores, but etrailer actually keeps stock of things.


I love the Kendas... Excellent tires for my custom boat trailer! Great handling.


As described. Nice upgrade and fast shi pping.


We will see how well they hold up long term, but this tire and wheel combo was just barely more than the tires alone so I decided to replace the whole unit. My originals are starting to rust after 20 years so if I get close to that out of the wheels themselves I'll be happy. I hope the tires last 5 at least. A generic set of tires I bought last time didn't last 3 years in the sun.
Only negative is I wish the valve stems were slightly shorter. They stick out past the width of the wheel just barely and it seems they would be more vulnerable.



George, the tires dont show any signs of dry rot nor have went flat. The wheels dont show any rust yet. I wouldnt think either would have in just a year but thus far they are holding up great. As an aside, the local big box store] specials tires that were previously on that trailer dry rotted in 2 years and both failed on the same trip and really dinged up one of the wheels. It was usable, but rim dinged. Lets just say they wont ever see my trailers again. While I havent bought a lot from what I have bought seems to be priced about like some of the local budget brand stuff but seems like better quality stuff. Not premium, but good. I do wish carried more DIY small lawn cart type parts. I want to convert a small tire 2 wheel 15k generator to a larger/wider 4 wheel design with removable tow bar for lawn mower.

Etrailer Expert

Rachael H.


Thanks for the follow up, and as you noted at this time we do not have the components you need to build your small lawn cart. We are continuously adding new product and product lines to our offerings so please check back often and we may have just what you need.


Best price I found for galvanized rim tire for saltwater fishing. Arrived in just 3 days well packaged and the tire appears to be good quality. Will definitely be checking for future needs.


The package came on time and in great c ondition.


Pretty thin rims, a little rough on the galvo finish but overall a good deal for the money.


Wheels look great! Can't wait to finish my trailer build and put these on it! Come on April!


This wheel and tire package is perfect and matches the original wheels and tires on my boat trailer.I like the price and especially free shipping.I recommend this product it is a quality product.

Danny D.




Exactly what I was looking for


I received the tires I ordered from you and they are exactly what I needed.
The order arrived in a timely manner. Thank you!


I will definitely use e trailer again


I've had these for a year now, and I'm happy with them. I use the utility trailer about 10 times a year for various things like camping, hauling motorcycles, taking things to the dump etc. The trailer is outside all the time and the galvanized treatment is working great no signs of rust at all, they still look new. Tires are holding up well with little wear and the tubes inside must be good quality as the air pressure stay very constant. I would buy these again for sure.


Fit nicely , replaced 8” worn tires and wheels . Handled several 350 mile trips with loaded 4x8 trailer well, tires didn’t bulge with weight.


Bought these for my kayak fishing trailer. Have driven from Midwest to FL twice and SC once on these tires. No problems at all. Work very well.


Great quality even better price


I was really impressed with the quality and appearance of the tires and wheels I purchased from E-trailer. Not to mention the speed with which they were delivered. I have them on my trailer already and they look great. The air pressure was perfect. I'm telling everyone I know where to buy tires and wheels. THANK YOU.


The tires on these rims are really narrow. My older set were wider but the same diameter. They do fit well and work fine on my 3 rail motorcycle trailer.


Company does not lack communication and shipping is reasonably fast.
I guess Kenda and loadstar is one in the same,my tires said Loadstar on the side.
i dont care about that and its a nice tire and wheel and looks like it will last a long time,fits my boat trailer and replaces worn and dry rotted tires and rusted wheels.
Wheels look better than the trailer.
So if you need tires wheels in general etrailer is the place to find and buy


Prompt, helpful service from staff in finding the right wheels and tires. Excellent experience and very cost effective too. This change in wheel and tire size works perfectly on our small utility trailer/wagon.


Wheel/tire package arrived two business days after ordering and were packaged in a very heavy duty cardboard container which was very impressive. This was the best packaging I've ever seen for such a large mail item - credit to etrailer for not skimping out on this, especially considering it was FREE shipping. Not much to say about the wheels and tires, they are as advertised, look nice, and will be a huge improvement over the 8 inchers that came with my trailer package. I definitely will use etrailer again in the future.


Wanted a spare for my small boat trailer. Couldn't seem to find one in town and the dealer who sold me the trailer wasn't any help. I had no trouble finding an exact match to the tires and wheels on my trailer and the service at E-Trailer can't be beat.

Show More Reviews

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

  • What Does the Kenda 4.80-12 Bias Trailer Tire with 12" Galvanized Wheel # AM30550 Weigh
    The Kenda Wheel and Tire part # AM30550 that you referenced weighs 18 lbs.
    view full answer...
  • Recommended Replacement 4.80x12 Wheel/Tire With Higher Speed Rating for Harbor Freight
    The Kenda 4.80-12 Bias Trailer Tire with 12" White Wheel part # AM30620 is a great replacement option with 65 mph speed rating and 4 on 4" bolt pattern. If you want to go higher than 65 mph then you would need to upgrade to a much larger tire which might not even be possible due to available space. In regards to weight, each tire would be rated for 990 lbs for a total of 1,980 lbs. If you need to go higher than this you could again need to upgrade to a larger tire.
    view full answer...
  • Can 8 Inch Trailer Tires be Replaced with 12 Inch Trailer Tires
    Hey, thanks. You're not so bad yourself! Going to a larger tire size is possible but there are a few things to think about. Chief among these things is clearance. When going from an 8 inch tire to a 12 inch tire the diameter will increase by 4.4 inches. This means that if there is anything above the tire such as a fender the larger tire may not fit. Even if you have the clearance now you also have to account for the travel of the suspension. The width between the two sizes is not a concern...
    view full answer...
  • Going With Larger Wheel and Tires on a Tear Drop Trailer
    I would first recommend that you check to see how much clearance your current tires have. This will help you determine if you can fit any larger tires without modifying the fenders or suspension. I like to have at least 1" of clearance throughout the suspension travel. I have included measurements for your tires below with a couple options to allow you to see what is available that may require little to no modification. 4.80/4.00-8 # AM30040 -Width- 4.7" -Height- 16.1" 5.70-8 # AM10010 -Width-...
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  • Replacement Tire and Wheel for Trailex Sea Kayak Trailer 4.80-12 Galvanized Wheel
    We have two options that are exactly what you are looking for with the part # AM30630 which is a Load Range C 4.80-12 on a galvanized wheel with a 4 lug bolt pattern or the part # AM30670 for a 5 lug wheel.
    view full answer...
  • How Much Does Kenda 4.80-12 Bias Trailer Tire with 12 White Wheel # AM30620 Weigh
    Kenda 4.80-12 Bias Trailer Tire with 12" White Wheel - 4 on 4 - Load Range C Item # AM30620 weighs approximately 18 pounds each Wheel and tire combo # AM30550 weighs slightly less at about 17 pounds.
    view full answer...
  • 12 Inch Wheel & Tire For Trailer With Higher Speed Rating
    I cannot recommend going above the 65 mph limit of the load range B Kenda 4.80-12 Bias Trailer Tire with 12" Galvanized Wheel - 4 on 4" Bolt Pattern # AM30550 or 5 on 4-1/2" Bolt Pattern # AM30590. Having said that, going to a higher-rated tire such as the Load Range C Taskmaster # TT53012C is also not a good idea for your trailer. The reason is they have about four times your load capacity so you would have to deflate them or your trailer would bounce to the point it could get dangerous,...
    view full answer...
  • High Speed Replacement 4.80-12 Replacement Tire and Wheel With 5 on 4-1/2 Bolt Pattern
    You could do the Kenda # AM30660 and safely pull at 65 mph. This is our only option for a pre-mounted tire and wheel combo. I strongly recommend going with a tire with a higher speed rating, but to do this they will not come mounted on the wheel. You would buy them separately and have them mounted at a local shop when they arrive. For your tire, I suggest the Taskmaster 4.80-12 Bias Trailer Tire 12" load range C # TT48012C because these tires are rated for 81 mph. Then for your wheels...
    view full answer...
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  • Availability of 4.80-12 Trailer Tire on 4 Lug 4 Inch Bolt Circle Wheel
    We offer several different wheel/tire combos that feature a 4.80-12 tire on a 12 inch rim with a 4 lug 4 inch bolt circle. We have a 4.80-12 load range C with a 990 lb capacity available on a white steel wheel, part # AM30620, a galvanized wheel, part # AM30630 or an aluminum wheel, part # AM30677. A load range B tire with a 785 lb capacity is available on a white steel wheel, part # AM30540 or a galvanized wheel as part # AM30550. I have also linked you to our trailer tire FAQ article...
    view full answer...
  • Replacement 4.80-12 Trailer Tires and Wheels for a Boat Trailer
    The capacity listed on a tire is per tire so for two tires with the same capacity you would double that capacity. Going to higher rated tires will not increase the capacity of the trailer because the axle, suspension, and other components would limit the trailer capacity. The tires being 10 years old and cracked should be replaced for sure. The wheels might be fine especially if they are corroding or damaged in any way. So you may not need wheels. If you go with tires only I recommend...
    view full answer...

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