How Much Air Pressure Should be Used on a Specialty Trailer Tire

Question:

Tire pressure question? Tire is named: load star 4.80-12 High speed maximum load is 990 pounds 6P.R. 90PSI How much air do i inflate this tire too 40lbs 60lbs ? Thank you

asked by: Allen

Expert Reply:

You will want to inflate your tires to 90 psi if that is what is listed as the max psi.

Special trailer tires should be inflated to their maximum air pressure. The value for the maximum air pressure should be listed along with the value for the maximum load on the tire's sidewall.

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: Jameson C