Correct Tire Pressure For ST205/75-15 Tires On 2,000 Lb Trailer

Updated 05/18/2015 | Published 05/16/2015

Question:

I have a set of Gladiator QR25-ST trailer tires size ST205/75/R15. My trailer is related at 2,000 pounds hauling weight. What do you recommend as a correct tire pressure?

asked by: Don M

Helpful Expert Reply:

I did some research and for your tires I found that the maximum pressure posted on the manufacturer site was 50 psi. Typically, the tire pressure should be set to the maximum that is listed on the sidewall of the tire.

Tire pressure should be checked and adjusted when the tire is cold and filled to the maximum amount listed for better performance. At the maximum air pressure, the tires will perform and wear best, and get the best gas mileage.

If a trailer tire is inflated to a lower air pressure than the maximum, the amount of weight that the tire can carry will be reduced. If a heavier load is put on the trailer tire than what is recommended for that air pressure, the sidewall of the tire could heat up and cause the tire to fail.

expert reply by: Jeffrey L