Can an ST225/75R15 Load Range E be Used in Place of an ST225/75R15 Load Range C

Question:

Can I take this tire size ST225/75R15 load range C and go to an E load without changing the rim. I own a 2014 28-foot Flagstaff fifth wheel 8 thousand pounds model 8528ikws

asked by: Al G

Expert Reply:

Load range C and E tires in size ST225/75R15 will fit the same wheel size so you can go to an E, # AM10303. However, the higher capacity tire will not increase the capacity of the trailer.

This tire is rated for 2,830 pounds at 80 psi. Trailer tires should always be inflated to the maximum psi indicated on the tire sidewall. This is because trailer tires are built with a thicker sidewall than passenger vehicle tires to handle more vertical load. If under inflated the thicker sidewall generates excessive heat and can lead to failure.

expert reply by: Michael H