What is the Difference between a Tire Size that Starts with P and ST

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Question:

Whats the p stand for on a p175/80x13

asked by: Steve R

0

Expert Reply:

The P in the tire size part p175/80-13 that you referenced indicates that it is for a passenger vehicle and should not be used on a trailer.

For a trailer you want to go with a size that starts with ST which stands for specialty trailer.

For an ST rated tire in the same size you would want the part # TTWTRTM1758013C. I attached a review video for this tire for you to check out as well.

expert reply by: Jameson C

0

Answer 1

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…

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Answer 2

If you only have the nut and a washer but no cotter pin or retaining type washer on the end then that isn't correct and you want to get a piece to help prevent that nut from backing off. If you have a setup like the Spindle Nut Kit for EZ…

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Answer 3

Grease seal width is not nearly as important as inner and out diameter. If the seal you have matches the diameters correctly and the bearings are also correct for the hub and spindle you are totally fine. You do not need to seat the seal beyond…

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Answer 4

After you have your hub and bearings on your spindle you will then put on the washer, then the nut, and then the nut retainer (yellow piece) from the Nut Kit #RG05-100. The nut retainer helps to keep the nut from backing off and, ultimately, your…

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Answer 5

If there is a tiny bit of play in suspension components that are designed to move you would be fine. 1/16 of an inch isn't very much, and as long as you torqued everything down to spec you would be good to go. Ideally we just don't…

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Answer 6

The clip that goes around 3 of the leaves of the 5-Leaf Spring part #e34SR that you referenced can go either in front of the axle or behind it. Either way would be perfectly fine. I attached an FAQ on trailer suspension for you to check out as well.

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Answer 7

To determine the size of the hub assembly you need to purchase you have to determine which bearings are in the old assembly. If the old assembly has L44649 inner bearings, you would use the hub you chose #8-258-5UC1. If the inner bearings are marked…

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Answer 8

I was able to confirm your wheels are 13 inches on your Zieman J1-B trailer. Because I don't know the tires currently on your trailer, I can only make recommendations for your spare based on best options for the two bolt patterns. If you have a 5…

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Answer 9

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 10

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 11

Your math is correct in your trailer weight load example. If a fully-loaded tandem axle trailer weighs 4000-lbs then each of the 4 tires will bear 1/4th of that load, or 1000-lbs. In this case a tire rated for 1300-lbs would provide a good safety…

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Answer 12

Karrier and Loadstar are two different brand names used by Kenda. There's no difference in quality or function between the two brand names. For a ST175/80-13 Radial trailer tire in load range D, I'd recommend part #AM10210 if you're…

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What is the Difference between a Tire Size that Starts with P and ST

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