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

Reply

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.

Reply

Answer 1

Good news, I can help you find a tire for your Sundown Horse Trailer. The 205/90-15 is a close tire size to the 7.00-15. The closest size to a 7.00x15 tire that we offer would be a 225/75-15. One 225/75-15 tire that could work for you is the Kenda…

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Answer 2

That's a very good question, we tend to be extra cautious and say to use 10 gauge wire because that would be more than enough. When you get into longer trailers that will end up using a lot of wire the heavier gauge wire becomes more necessary.…

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Answer 3

The modern tire size for the H78-15 tires is 225/75-15. The Karrier ST225/75R15 Radial Trailer Tire, #AM10256, would be a suitable replacement tire. Keep in mind, this is a Load Range D tire which is an 8 ply tire with a load capacity of 2,540 lbs at…

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Answer 4

Yes, you will need to replace the spring with something like Item #e74SR. It is best to replace all springs at the same time so that you have even support and maintenance for the trailer. We do not carry 2 inch never fail bushings. I contacted…

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Answer 5

You are correct that is a 3,500 lb axle. If you want a bearing kit the #BK2-100 you looked at is the right one. This comes with a #L44649 outer and #L68149 inner bearing along with a #58846 (10-19) grease seal. If you want a replacement idler hub you…

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Answer 6

The hub you describe is a 3500 lb 10 inch hub/drum with a 6 on 5-1/2 inch bolt pattern which uses an L44649 outer and an L68149 inner wheel bearing and a 58846 grease seal. For a replacement, I'd recommend the #AKHD-655-35-EZ-K hub/drum. The…

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Answer 7

Yes, 14 gauge wire seems too small. I would go with 10 or 12 gauge. For 10 gauge you can use #10-1-1 and for 12 gauge use #12-1-1. These wires are sold in increments of 1 foot. So if you needed 20 feet of wire you would enter 20 in the quantity box.…

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Answer 8

To wire your electric brakes you will want to run 10 gauge wire #10-1-1 to one of the brakes and run it to the other brake, using butt connectors like #05732-2 to connect them. The grounds will not be spliced, each brake assembly should have its own…

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Answer 9

It sounds like you are speaking of the wires for the brake magnets. If this is correct, you will need to connect one of the wires to the brake controller output wire on your trailer connector and the other wire will need to be grounded to a clean…

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Answer 10

If you are looking for a round connector with a 7-way blade I recommend part #H20046. This is a trailer end connector with 8 ft molded wire. For a 7-way with 6 ft of molded wire you need part #H20044, and for the connector with 4 ft of molded wiring…

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Answer 11

To select the correct Bow Roller or Bow Guard, see links, for your Tidewater boat trailer, you will need to measure to determine the proper size. The width of the roller and diameter of the shaft that the roller installs on will be needed. Most boats…

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Answer 12

The two sizes you mentioned are pretty similar and fit many of the same 15 inch wheels. The 205/75-15 fits rim widths of 5 inch to 6-1/2 inch whereas the 225/75-15 fits widths that are 5 inch to 6 inch. The 205 is 27.1 inches tall and the 225 is 28.4…

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