Recommended Tire Upgrade To Replace ST225/75/15 Tires On Tandem Axle Toy Hauler

Question

Question:

Are there any 15 trailer tires you carry or know of that are F or G rated? I have 225/75/15 now. I have a dual axle toy hauler, and load it with a side-by-side. I want a tire that can handle the load and trailer safely.

asked by: David H

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Expert Reply:

I may have another option for you, but 225/75/15 trailer tires usually only have a load rating up to E. Another thing to keep in mind is the load rating is as high as the weakest components. If your tires have a 3000lb load rating but your wheels are only rated to 2500lbs you will be limited to 2500lbs.

To be able to find heavier duty tires much easier I recommend stepping up to a 16" wheel and using a tire like the Westlake ST235/80R16 Radial Trailer Tire - Load Range G # WE76FR. This tire will be just under 1/2" wider than your current 225/75/15 tires on your trailer, and will be about 2-1/2" taller. The # WE76FR has a load rating of 4080lbs at 110 PSI which would be plenty for your tires.

You will need to make sure you have enough clearance between the inside edge of the tire and trailer frame, and top of the tire and bottom of the fender. The general rule of thumb is 1"-2" from the inside edge of the tire to frame, and 3"-4" from the top of the tire to the bottom of the fender.

Since the ST235/75R16 is less than 1/2" wider, you shouldn't have issues in that regard, but the 2-1/2" increase in overall height may cause an issue with fenders. You could use an over-under kit like the # K71-385-00 to move your axle underneath the springs if they are not already like that. This would lift the trailer by the same amount of the diameter of the axle plus the height of the leaf spring pack. The # K71-385-00 is designed for a 3" diameter axle so you would need to verify this before ordering.

Lastly you would need a heavy duty 16" wheel, but that will be dependent on the bolt pattern of your current hubs. I included a helpful article that goes over how to measure your bolt pattern, and a link to all of our 16" trailer wheels for you.

I included a video review for both of the products mentioned for you to take a look at.

expert reply by: Samuel C

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Answer 1

For being used as a spare while you get a replacement tire it is not a problem but long term you will want to replace your blown tire with one of the same size. The reason for this is the 215/70R15 tire is slightly taller than the ST205/75R15 tire…

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Answer 2

The 19575-14 and 205/75-14 tire sizes are close enough that you won't have any issues with this transition. The tire I recommend picking up is the Karrier ST205/75R14 Radial Trailer Tire #AM10234 because it's very reliable, has a load range C…

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Answer 3

There are usually identifying marks and other information on the outside of a trailer brake drum that indicates what it is. But if you go by the inner width and diameter and select the correct bolt pattern to match what you have then the part number…

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Answer 4

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 5

Hey Bryan, that's a good question. The pricing can definitely be misleading, but I wouldn't use it to judge the quality of the tire. A lot of that comes down to promotions, inventory, and whether you're looking at a tire by itself or…

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Answer 6

The 5.30-12 tires, being wider, are going to make more contact with the road. This means that the noise, and heat build up will be higher than a 4.80-12 tire but the rolling resistance will actually be less because the tire is larger diameter. The…

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Answer 7

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 8

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 9

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 inch whereas the 225/75-15 fits widths that are 5 inch to 6-1/2 inch. The 205 is 27.1 inches tall and the 225 is 28.4…

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Answer 10

The #84 spindle is just a common way to identify the spindle dimensions typically used for 3,500 lb axles. So instead of listing out the parts, people can just say they have #84 spindles and it's easier to know what fits it. The CE Smith Trailer…

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Answer 11

The OEM prep package consists of 4 "pucks" in the bed of the truck that will allow you to drop in puck style hitches for easy installation and removal, that gives you a completely clear bed when not in use. The B&W Companion OEM 5th…

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Answer 12

You will have to go with a sliding hitch to allow the trailer to make tight turns. For a trailer 8 feet wide the only bed length that's going to allow 90 degree turns without a slider is a stationary hitch. That being said you have two options.…

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Recommended Tire Upgrade To Replace ST225/75/15 Tires On Tandem Axle Toy Hauler

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