What Does a Trailer Tire Load Range Mean

Question

Question:

In load ranger, whats mean D, E or other letters. Thanks a lot.

asked by: Luis C

0

Expert Reply:

I believe you mean Load Range since the Load Ranger was the unsuccessful brother of the Lone Ranger.

For any given tire size there can be different load ranges. The different load ranges have different weight capacities. This has to do with the number of plies and/or ply rating of the tire. The more plies in the tire construction or the higher ply rating the higher the capacity is.

Keep in mind that going to a higher capacity tire does not increase the capacity of the trailer.

If we are looking at ST225/75-15 tires as an example, the C load range is rated for 2,150 pounds at 50 psi. The D load range is rated for 2,540 pounds at 65 psi. And the E load range is rated for 2,830 pounds at 80 psi.

If you had a single axle trailer with a gross weight rating of 5,000 pounds, you would use the D or E tires in this size since the C tires would be under rated for the weight. I have included a link to our help article on trailer tires for you as well.

expert reply by: Michael H

0

Andy G.

4/28/2020

I would like to ask a question about my tires on my cargo trailer.i have a double axle trailer it has 3500 leave spring axles. I have ST205x75xR15. I have a rzr I haul in it about 500 miles from where I live. My question is what would be a good reliable and dependable tire I could get that would be weight appropriate. I don’t understand the C, D, E load range stuff. Thanks for all you help

Chris R.

4/30/2020

The letter designations for load range just indicate their capacity. For your application I highly recommend the Goodyear Endurance # 724861519. This is really the perfect highway tire - it features more than enough capacity for your loaded trailer, uses automotive-grade tread for better traction, and has a really high speed rating of 87 mph. The Endurance line is the only radial ply trailer tire made in the USA.

Answer 1

Your math is correct in your trailer weight load example. If a fully-loaded tandem axle trailer weighs 4000-lbs then each of the 4 tires will bear 1/4th of that load, or 1000-lbs. In this case a tire rated for 1300-lbs would provide a good safety…

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Answer 2

Yes, with trailer tires you do need to always keep the tire inflated to it's max PSI rating to ensure you get the full weight capacity of it and minimize heat build up which might cause premature failure. So to ensure you get the full weight…

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Answer 3

On a single axle using 2 of the Kenda 5.30-12 Bias Trailer Tire with 12 Inch White Wheels, #AM30859, the combined weight carrying capacity of the tires would be 2,500 pounds. You would need to add in the weight of the boat, trailer, and anything on…

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Answer 4

The difference between an load range C and load range D tire in the same size is the capacity and psi rating. The two tires will still have the same dimensions and fit on the same wheel. The D rated tire has a higher capacity. For a ST175/80D13 like…

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Answer 5

Provided that you have enough clearance, changing from your Bias 5.30-12 size tire, like part #AM30859, to a Radial 175/80R13, like part #AM31994, could definitely have its advantages and is a good idea. Bias tires are designed for more of an…

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Answer 6

The 5 means that the wheel is 5 inches wide from bead to bead (not overall width). The J indicates the design of the wheel bead seat but it is nothing you need to be concerned with as this is the most common shape for all trailer tires. To measure…

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Answer 7

The proper lug nut torque setting for the Kenda 5.30-12 Bias Trailer Tire with 12" White Wheel #AM30859 is going to be between 85-95 ft/lbs. It is important to remember to evenly torque the lug nuts in a star pattern in stages. If you try to…

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Answer 8

The Kenda 5.30-12 Bias Trailer Tire with 12" White Wheel #AM30859 will fit your Harbor Freight trailer as long as it uses the same 5 on 4-1/2" bolt pattern. The larger pilot hole diameter is not a problem since the wheels are lug centric…

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Answer 9

Hey Tom, I attached a link to this page that has a printable template that you are looking for. You may have to scroll down to get to it and it will be a PDF file.

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Answer 10

Hey Lee, so in general the radial tire construction is preferred over the bias ply. You'll get a more stable ride and generally a little less heat build up. If you will be under the weight and speed capacity of your current tires I think…

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Answer 11

Trailer wheel and tires don't really need to be balanced. Some people go ahead and still do it but the benefits are hard to notice and since trailers suspension is pretty harsh the weights typically end up bouncing off. I wouldn't mess with…

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Answer 12

Due to the age of your 96' Coleman pop up and there being a few different versions it's hard to say exactly what size you have, but we did have a guy with a 97' come tell us he had the tire size 5.30-12 mounted on 5 lug wheels so I'll…

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What Does a Trailer Tire Load Range Mean

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