Does The Spare Tire For a Trailer Have To Use The Same Wheel and Tire as What is Already Mounted?

Question

Question:

I have a boat trailer that did not come with a spare tire. I want to get a spare tire but I can not find the identical rim anywhere. Your site has the same tire and lugnut specs but the spare would be on a different rim. Is that an issue? Or is it ok to trailer that way?

asked by: Ted

0

Expert Reply:

I see you were looking at the Karrier ST215/75R14 Radial Trailer Tire with 14" Aluminum Wheel # AM32195. While having the same size tire and bolt pattern is really all that is needed with a spare trailer tire you will want to make sure they also have the same load range as your current tires. This tire is a load range C with 1,870lbs capacity. It is okay if the tires are different manufacturers and if they require different air pressures as they are only supporting the load of the trailer.

If you can send me a picture of your current wheel and the information on the sidewall I can see if the tire matches and if there is an available wheel that matches what you currently have.

expert reply by: Bud M

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Answer 1

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…

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Answer 2

The Kenda Karrier ST205/75R14 Radial Trailer Tire #AM10235 (Load Range D) and the Kenda Karrier ST215/75R14 #AM10229 (Load Range C) that you referenced are simply different tire sizes. The ST215/75R14 tire size is larger in diameter/height by just…

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Answer 3

The main difference between a ST205/75-14 size tire like the Contender #AC14R45SM and a ST215/75-14 size tire like the Taskmaster Provider Item #TTWTR21514 is that the larger number is a slightly larger size. The 205 has a section width of…

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Answer 4

Yes, radial tires are much preferred over bias ply tires for a number of reasons. The main difference between a radial ply and a bias ply tire is how the tire is constructed. The cords inside a bias ply tire run at a 32 degree angle to the direction…

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Answer 5

Typically we recommend the use of the same tire size when picking out a spare tire for a trailer, but since the overall tire diameter difference between the two tire sizes you listed is only .3 of an inch you would be fine for just getting the…

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Answer 6

Having different size tires on your trailer can cause a couple of different issues. The first one being that they have different weight capacities. Your 4.8-12 ranges from 785 lbs at 60 psi to 990 lbs at 90 psi whereas your 5.3-12 ranges from 840 lbs…

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Answer 7

It's not a good idea to put two different tire sizes on a single axle. The outer diameters of the tires will differ. Looking at the two you mentioned (215/75R14 and 205/75/R14), we can compare two of the same model with the slightly different…

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Answer 8

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 9

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 10

Load range B trailer tires are going to have a lower capacity than C load range tires. Basically that, psi rating, and the ply rating are the only differences. A higher load range tire would last a little longer than lower load ranges of the same…

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Answer 11

The three most common lug stud sizes for a trailer are 1/2"-20, 9/16"-18, and 5/8"-18. In order to make sure you get the correct lug nuts you need to measure the lug studs on the trailer now as we have no way to look this up for…

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Answer 12

Good morning, Cliff. As of today (3/27/24) we are expecting the #KE33JR tire/wheel combo to be in stock in about 2 weeks. Hopefully this means we can take our own pictures and put them on the site within maybe about 3-4 weeks from now. What I can…

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Does The Spare Tire For a Trailer Have To Use The Same Wheel and Tire as What is Already Mounted?

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