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Why is the Wheel on the Kenda 5.70-8 Wheel and Tire Combo Rated Lower than the Tire


I am considering upgrading to a load range D but the wheel is only rated for 910lbs. How can I carry the 1075lbs. that the tire will allow? I have a small trailer that will do 2000lbs. and came with 4 on 4 load range C 5.7-8 wheels and tires I think the fenders would stop me from getting a bigger tire or wheel. I would like to just replace the tires.


Expert Reply:

On the Kenda 5.70-8 Tire and Wheel Combo, # AM30153, Kenda uses a load range D tire because the 8-ply load range D tires have a stronger construction than 6-ply load range C tire. Even though there is a higher rated tire on the wheel, the maximum weight capacity is still only 910 lbs. You will just get a stronger tire with this combination that will last longer than a load range C tire.

Unfortunately, we do not carry an 8 inch wheel and tire combo with a 4 on 4 bolt pattern that has a weight capacity greater than 910 lbs. If the wheels that are currently on your trailer have a weight capacity greater than 910 lbs, you could use the Kenda 5.70-8 Tire, # AM10013, which has a weight capacity of 1,075 lbs at 100 psi.

If your wheels are not rated higher than 910 lbs, then to move to a higher weight capacity you will want to move to a 10 inch wheel. We carry the Kenda 205/65-10 Tire and Wheel Combo, # AM3H370. This tire and wheel combo will have an overall diameter that is approximately 2 inches larger than your 5.70-8 tires. They will also be about 3 inches wider.

To determine if you will be able to move to a larger tire size, you can measure the clearance that you have from the top of your tire to the inside of your fender and from the inside of your tire to the closest part of your fender or trailer. The larger tire will be about 1 inch closer to the inside of the fender well and about 1-1/2 inches closer to the trailer.

I also recommend verifying that your axle is rated for 2,000 lbs. If your trailer came with the 5.70-8 tires with the 4 on 4 bolt pattern, your trailer may have a derated axle. You can find the gross weight rating (GVWR) of your trailer stamped or printed on a plate on your trailer frame.

expert reply by:
John H

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