Recommended PSI for 18 x 8.50-8 Size Trailer Tire

Updated 05/28/2019 | Published 05/23/2019

Question:

18.5 by 8.5- 8 Small boat trailer tire pressure recommendations

asked by: Randolph J

Expert Reply:

Check the sidewall of the tires it should list the maximum psi. Most trailer tires should be inflated to their maximum psi when they're cold in order to get the best performance and wear out of them. Some manufacturers use a different psi for different applications but this isn't very common, especially on an 8 inch tire.

For example, the 18x8.50-8 tire we carry, part # AM40537, maxes out at 22 psi as shown on the sidewall. Other tire manufacturers won't necessarily be the same but they should say on the tire.

expert reply by: Charles S