Can ST175/80-R13 Tires Replace ST175/80-D13 Tires On a Trailer

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Question:

I have st175/80d13 tires can I replace them with st175/80r13 tires load rated c

asked by: Jonathan G

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Expert Reply:

Yes, ST175/80-D13 trailer tires can be replaced with ST175/80-R13. For this, I recommend the Provider ST175/80R13 Radial Trailer Tire part # TTWTRTM1758013C which is an excellent option with automotive-grade tread for the best longevity and performance.

Please note, the two above tires are the exact same size with the only difference is that one (D) has a bias ply and the other (R) has a radial ply which will run cooler on the highway therefore last longer.

expert reply by: Conner L

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Answer 1

The reason that you cannot find a list of all load ranges and the weight capacity for each in regards to trailer tires is because it will be different for each size. For example, a 205/75-15 tire like part #AM10245 which has a load range D rating is…

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Answer 2

Yes, you can run a 175/80-R13 tire on a trailer that came with a 175/80-D13 tire. The only difference between the two is that "R" stands for radial ply and "D" stands for diagonal. For a replacement 175/80-R13 tire, I recommend…

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Answer 3

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 4

The difference is that D stands for bias-ply and R stands for radial. 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 of travel,…

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Answer 5

It's fine to use a radial-type tire as a spare (a tire with "r" in its size code) with a trailer that has Bias ply "d" tires but for a short distance in the event of a flat tire. But mixing tires is not recommended for…

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Answer 6

The ST175/80R13 radial tire we offer like part #TTWTRTM1758013C would measure 6.889 inches wide while a tire that is ST185/80D13 would be 7.283 inches wide. That is a difference of .393 inches or a little over 1/3 inch. The #TTWTRTM1758013C tire…

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Answer 7

Although the Provider ST175/80R13 Radial Trailer Tire w/ 13" White Wheel #TA43RR that you referenced is a great tire and wheel combination, but we do have a better option that will resist salt water more. The Karrier ST175/80R13 Radial Trailer…

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Answer 8

The difference between the letter D in your ST175/80D13 and the R in the tire size of the Wheel and Tire ST175/80R13 part #AM31985 that you referenced is the tire construction. D stands for bias-ply which is a less preferred tire construction,…

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Answer 9

Yes, as long as the spare tire is the same size, load range (weight rating) and has the matching wheel bolt pattern you can use a bias ply spare to replace a radial main tire for the short distance you'll travel to get the radial repaired or…

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Answer 10

The Provider ST175/80R13 Radial Trailer Tire w/ 13" Vesper Silver Mod Wheel - 5 on 4-1/2 - Load Range C Item #TA73RR matches your need perfectly. It is also available in the load range D you mentioned with the Karrier ST175/80R13 Radial Trailer…

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Answer 11

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 12

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

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Can ST175/80-R13 Tires Replace ST175/80-D13 Tires On a Trailer

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