How Wide of a Rim is Recommended for the Tire Size ST225/75R15

Question

Question:

I just purchased a new trailer. The tire size is ST225/75R15. The wheels are 5 inches in width. Is this enough rim width?

asked by: Ed

0

Expert Reply:

For a wheel that is 5 inches in width and 15 inches in diameter you would want tires that are size ST205/75-15.

For the tire size ST225/75R15 you listed you would want a rim that is from 6-7 inches in width.

I attached a department page that has all of our tires that are that size. I also attached a page on trailer tire sizing that has a chart that show what tire sizes go with the different rim sizes.

expert reply by: Jameson C

0

Brent

12/11/2025

Would be helpful if the dept. page was available here also.

Jameson C.

12/11/2025

@Brent Here's link attached to this message. It is on the page down below as well.

Helpful Links

dept-pg-tires_and_wheels-sf-tire_only-gw-205%7c75%7e15.aspx

Cliff L.

12/15/2025

Is an 8” GM rally wheel too much for a trans eagle 225/75/15 load range f radial ? Will the rim width compromise the integrity and/or functionality of the tire?

Jameson C.

12/15/2025

@CliffL well for one this tire isn't rated for use on a vehicle and its for a narrower wheel. It's hard to say exactly how it would perform though.

Answer 1

It sure will! A 225/75-15 tire will fit on a wheel that's 5, 6, 6-1/2, or 7 inches wide. I've linked to the 225/75-15 load range C, D and E tires we offer.

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Answer 2

Hey, Bill! Happy to help out here. The ST235/75R15 tire included with the wheel/tire combo #KE32JR is actually approved to be mounted on several rim widths, 6", 6-1/2", 7", and 7-1/2". So while 6" is the narrowest option,…

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Answer 3

Since wheels will be able to withstand the psi rating of any of the tires that are meant to fit it you will need to look at the valve stem as that is the deciding factor. If your valve stem has the rubber all the way up to the threads, like part…

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Answer 4

Yes, Linda, your Casita’s 5-lug 3,500-lb axle pairs perfectly with the #MXS67FR. The ST205/75R15 Load Range D 2,150 lbs @ 65 psi tire gives you a bit more capacity and smoother towing than the factory Load Range C setup. Plus, the painted aluminum…

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Answer 5

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 6

Hi Philip; it looks like the Highlander coil springs are different so I can't say for sure this will fit the 2026 Toyota Grand Highlander. These are fairly universal so what you can do is measure and we can match up the right fit for your…

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Answer 7

Hey Russel. There's two different hub options that will work with the Timbren Axle-Less Trailer Suspension item #ASR35HDS01. Which one you need is going to depend on the lug nut pattern and how large of wheels you want to use. I have listed them…

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Answer 8

Hey Tracy. The Curt T-Connector Vehicle Wiring Harness item #C44FR is what you'll need to add a 4-way to your 2025 Honda Prologue. This harness is going to plug into a factory port behind your rear bumper on the passenger side. You'll be…

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Answer 9

Hey Sean, that's quite the lift. The 6" Lift Spacers for Firestone Ride-Rite Air Helper Springs item #F2375 are going to be our tallest option. There's no spacer that will help you out with a 9" rear lift. They are compatible with…

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Answer 10

When a trailer wheel/tire like the bias ply Kenda #AM30120 shows a weight carrying capacity of 910-lbs, which is for Load Range C, that is for just the one wheel/tire. So, yes, you would double that to determine the total weight capacity of the…

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Answer 11

A 235/75R15 size tire will mount to a 15 inch wheel that features a width range of 6 to 8.50 inches. With this in mind, the Dexstar Steel Mini Mod Trailer Wheel #AM20545 that you referenced should work nicely with your off-road tires, as it features…

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Answer 12

Hey Mark, Yes, the Timken bearings that we offer do come in anti-counterfeit boxes. I've attached a picture of the Timken Replacement Trailer Wheel Bearing - 25580 #TMK44FR that I took from our warehouse.

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How Wide of a Rim is Recommended for the Tire Size ST225/75R15

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