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

Question

Question:

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.

asked by: Michael

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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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Answer 1

Because the tire's load capacity is tested at full pressure, you always want to keep your trailer tires fully inflated to the pressure listed on the tire's sidewall. The only exception to this is the Goodyear Endurance, which lists…

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Answer 2

As you mentioned in your question, upgrading to higher load range tires on your trailer is not going to increase the weight capacity of the trailer itself. However, a higher-rated tire will have the benefit of running a bit cooler when compared to…

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Answer 3

The smallest tire and wheel combination that allow load range D will have 5.70-8 tires. This tire and wheel combination will be 18.1 inches in diameter and have a 1,075 capacity at 100 psi. There are a pair of options for you which we carry depending…

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Answer 4

With trailer tires you need to run them at the max PSI listed on the sidewall to ensure you get the full capacity of the tire and to prevent heat build up in them. For the Kenda 5.70-8 Bias Trailer Tire with 8" White Wheel - 4 on 4 - Load Range…

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Answer 5

The speed rating for the Kenda 5.70-8 Bias Trailer Tire with 8" White Wheel #AM30153 is 65 mph.

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Answer 6

With the 215/60-8 tire you currently have installed having an 18.5" diameter, the Kenda 4.80/4.00-8 Bias Trailer Tire with 8" White Wheel #AM30020 will be a bit smaller at 16.1" in diameter. A better option will be the Americana Steel…

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Answer 7

We typically recommend replacing trailer tires after 7 years, regardless of what kind of condition they appear to be in. On a trailer like yours that wasn't used too much before you bought it the tires are probably in much better shape than most…

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Answer 8

Unless your tire manufacturer has tested the tire's load capacity at 50 psi and could provide the specific load rating at that pressure, trailer tires should be maintained at the pressure rating listed on the tire sidewall. It would seem logical…

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Answer 9

On a towing setup you are always limited by the lowest rated component as the overall towing capacity since that is the weakest point. When it comes to trailer tires you always want to have them inflated to their max psi when cold. Not only do you…

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Answer 10

I can end this debate for you real fast! Trailer tires, which will have an ST in front of the size, should always be inflated to the maximum psi indicated on the tire. Trailer tires usually do not have a recommended and maximum psi indication so I am…

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Answer 11

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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Answer 12

In general most trailer tires require full max PSI inflated in them at all times with a very few exceptions. I don't know what tires you have but if there is an inflation chart for them based on load I'd go with that to find the correct PSI.…

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

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