What is the Correct Tire Pressure for Trailer Tires

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Question:

Im new to 5th wheels and wanted to make sure Im getting proper inflation on my tires. I have the Trailer King ST235/80R16 tires. Is 80 PSI the correct number for that tire cold? Thanks!

asked by: Ken

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Expert Reply:

Trailer tires are designed to be kept inflated to their max PSI that is listed on the sidewall of the tire. You will want to inflate the tires when they are cold.

So what you need to do is check the sidewall of your tires and find where it says the max tire pressure rating. That's what you should inflate the tire to when cold and you will be good. This ensures you get the full tire weight capacity as well as speed rating. Lower tire pressure allows the sidewall to flex which causes heat build up.

expert reply by: Jameson C

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Answer 1

You'll always want to fill a tire like the Westlake ST205/75R14 Radial Trailer Tire #274-000012 to the maximum 65psi when cold, since they will be able to handle the increased pressure as they warm up. Running tires below the max pressure leads…

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Answer 2

Always go by what's on the sidewall of the trailer as the amount of tire pressure to use when the tire is cold. This will ensure you get the full capacity of the tires and prevent heat build up. The other thing you need to consider is the max…

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Answer 3

The "cold" tire pressure refers to tires that are at the same temperature as the ambient air, since they will heat up and change the air pressure during travel. You'll really just want to make sure that you're inflating them to the…

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Answer 4

The max tire pressure on the tire is what you should follow. The sticker on your trailer was for the tires that came on your trailer. The replacements if inflated improperly would not operate correctly and would wear unevenly or fail if not inflated…

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Answer 5

Trailer tires should always be inflated to their max psi to ensure you get the full weight capacity and the best tire wear. The Trailer Tire part #AM30060 that you referenced should be inflated to 90 psi when cold.

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Answer 6

For the correct tire pressure for your tire you will want to check the sidewall of the trailer tire. A tire like the Kenda K353 Bias Trailer Tire #AM10062 does have a recommended cold tire pressure of 90psi and is rated load range C with a weight…

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Answer 7

If I am understanding you correctly, you are asking what the tire pressure should be on the tow vehicle while towing a 3,000 lb trailer, not the what the tire pressure should be on the trailer while hauling 3,000 lbs. If that is the case then there…

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Answer 8

You should not run your tires at 50 psi if their max rating is 65 psi. Trailer tires such as the Karrier #AM31991 always need to be filled to the max psi for the best performance, while reducing the air pressure is going to lessen the load you are…

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Answer 9

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 10

The load range sticker in the driver door jamb of your tow vehicle is what the recommend psi rating is for the factory tire size. If this is the size you have on your tow vehicle then that is the amount you will fill the tires to. If you have a…

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Answer 11

The trailer tire manufacturers we work with all have recommended the information you have seen given in our online answers. The max PSI from most manufacturers the listed capacity at the highest load capacity rating of the ST tire. There are charts…

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Answer 12

I'll start off by saying that I don't normally trust the VIN decoders available on the internet when it comes to being accurate with capacities and such, and the highest payload capacity I've seen in my research for the 2011 Chevy…

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What is the Correct Tire Pressure for Trailer Tires

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