Correct Trailer Tire Inflation

Question:

I have a hi run BCT JK42 ST205-75R15 load C trailer tire side wall has 2150 pounds at 65 psi is it ok to run 65 psi on load C tire that is what is on the side wall ??????

asked by: Rick C

Expert Reply:

I have checked online for the BCT JK42 tire you have. Per the website the load range C tires should say 1820 lbs at 50 psi. Load range D tires would have a load rating of 2150 lbs at 65 psi. In order for ANY tires to perform AS RATED they should be fully inflated. I have linked you to an FAQ article about tires. I have also linked you to an FAQ article that has a chart showing tire sizing and their capacities.

If a tire is under inflated it will reduce the amount of weight that the tire can carry. If a heavier load is put on the trailer tire than what is recommended it will cause the sidewall of the tire to heat up and cause the tire to fail. It is always recommended to inflate your tires when they are cold.

If a tire is over-inflated the tire will wear the center of the tread, all the way around the tire.

expert reply by: Jeffrey L