Trailer Tire PSI for Best Traction and Function

Question

Question:

Can you tell me the proper pressure in psi that my new tires require? The tire says maxload 1075 lbs @ 100 psi. They came with 54 psi in them. 100 psi seems like a lot.

asked by: Chris A

1

Helpful Expert Reply:

Trailer Tires that have the ST in front of the numbers are special trailer tires designed to be run at their max psi when inflated cold (prior to trip). They will warm up and that psi will actually increase as the friction and ambient temps increase. It may seem like a lot, but under inflation will actually cause premature wear and possible failure as the sidewall of these tires are designed to be firm and under inflating them will make them fail. Under inflating compromises the load capacity and traction on your tires as well.

Most people are used to vehicle tires and the much lower psi and where you aren't supposed to run at the max psi listed on the tire. Trailer tires are very different and designed to be run at their max psi. For instance the # AM1ST77 tires should be inflated to 65 psi which is way higher than any vehicle tire would be run but this is ideal for the performance of this tire.

expert reply by: Jason S

1

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 like…

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Answer 2

I can end this debate for you real fast! Trailer tires, which will have an ST in front of the size, should always be inflated to the maximum psi indicated on the tire. Trailer tires usually do not have a recommended and maximum psi indication so I am…

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Answer 3

With the exception of the Goodyear Endurance line of trailer tires, you should always air trailer tires up to the Pressure stamped on the sidewall of the tire as that is what the tire was designed to be run at. Since trailer tires have a different…

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Answer 4

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 5

Since the Westlake ST205/75R14 Load Range D like the #274-000012 will have a higher load rating than the other 3 tires on tandem axle trailer, you can use it with no issues. The only time using a different load rating would be an issue is if the one…

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Answer 6

The bearing number alone is not the best indicator for a specific grease or oil seal. Trailers with the same bearing number could have different seals based on the spindle or hub that is being used. Bearing number 30205 is not a bearing that we offer…

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Answer 7

The closest trailer tire size we have to 235/75-15 is the size 225/75-15 like the part #LHWL304 which is a great option. This has a capacity of 2,830-lb max load at 80 psi and a speed rating of 75 mph. This tire comes with complimentary roadside…

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Answer 8

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 9

Yes, you always want to have the tires on the trailer at maximum PSI rating of that tire, in your case, 95 PSI. Anytime you run a lower PSI, it significantly reduces the load carrying capacity of the tire. If you were to run a lower PSI, the thicker…

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Answer 10

I did some checking and the hub/drum we offer that will work for you is the part #8-430-5UC3. This uses the same bearings as the 8-415 and will be an exact fit aside from the fact this is a non-ABS setup and the 8-415 came in an ABS setup and non-ABS…

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Answer 11

If you are needing the hub and drum assembly then you will want to go with the Dexter Trailer Hub and Drum Assembly #8-201-5UC3-EZ but if you are just looking for an idler hub then you will want part #8-213-5UC1 instead. These come with the correct…

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Answer 12

If the trailer wheels scrubbed (dragged and scrapped the ground instead of rolling) when jack knifed then it could have thrown something out of alignment or damaged something. First, inspect the suspension. Look for any elongated holes where…

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Trailer Tire PSI for Best Traction and Function

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