What is Correct PSI Inflation Pressure for Special Trailer Tires

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Question:

With the above tires- 65psi recommended. Side of trailer says 80psi. Which do we do? Installer put in 60psi. Thx

asked by: Jpayne

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Expert Reply:

All special trailer tires regardless of size should always be inflated to the maximum psi pressure rating that is noted on the tire sidewall. It is never appropriate to under- or over-inflate a trailer tire since only when inflated to their rated pressure can tires deliver their specified weight capacity.

It sounds like your trailer may have had a different size, type or weight rating tire originally specified by the manufacturer and this could be why the trailer itself lists a recommended pressure rating of 80-psi. You want to inflate the tires to the cold psi pressure noted on their sidewalls. If you change to different tires in the future then inflate them to their specified pressure.

expert reply by: Adam R

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Answer 1

The trick with trailer tires is to inflate them to the max psi figure listed on the sidewall when they are cold and you are good. You do not need to anticipate pressure increasing from heat as this figure has already considered that. So first thing…

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Answer 2

As you mentioned in your question, tires should always be inflated to the maximum psi rating as listed on the tire's side wall. At maximum air pressure, tires will perform and wear best, as well as get better gas mileage. An underinflated…

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Answer 3

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 4

Trailer tires that have a higher weight load range will require higher pressure. The general rule is to always inflate your trailer tires to the maximum COLD pressure noted on the sidewall. All of our Load Range E tires in size ST225/75R15 appear…

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Answer 5

The main reasons why trailer tires blow out is heat generated from under inflated tires and overloading the tires. Trailer tires should be inflated to the maximum psi indicated on the tire. A tire in the same size but with a higher ply rating would…

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Answer 6

The proper tire pressure at all times is the max pressure listed on the side of any trailer tires. Trailer tires are rated for weight capacity and designed to function based on that maximum tire pressure. The tires should be inflated cold, meaning…

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Answer 7

Yes, radial trailer tires can spin in either direction. They are not directional. I attached an FAQ article on trailer tires for you to check out as well.

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Answer 8

For any of the recommended wheels you can use valve stem #AM20903. The pilot hole on all of the wheels is 3.19 inches in diameter which is a common size. I have no doubt that the wheels will fit your hubs especially since you mentioned the…

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Answer 9

On a towing setup you are always limited by the lowest rated component as the overall towing capacity since that is the weakest point. When it comes to trailer tires you always want to have them inflated to their max psi when cold. Not only do you…

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Answer 10

As you mentioned in your question, upgrading to higher load range tires on your trailer is not going to increase the weight capacity of the trailer itself. However, a higher-rated tire will have the benefit of running a bit cooler when compared to…

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Answer 11

Trailer tires really shouldn't be used after 6 years of age. The materials of the tire just breaks down to the point they become compromised and will eventually fail. In nearly every situation the treads will still be seemingly good and it's…

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Answer 12

On any trailer tire you always want to inflate the tire to the maximum cold psi, which you said on your tire was 80 psi. Doing this will give you the best performance, allowing the tire to wear more slowly and give you optimum gas mileage.

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What is Correct PSI Inflation Pressure for Special Trailer Tires

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