Trailer Tire Recommendation to Replace a F78-15

Updated 04/13/2015 | Published 04/11/2015

Products Featured in This Question

Loadstar ST175/80D13 Bias Trailer Tire - Load Range D

(3888)

$93.94

Karrier KR03 ST205/75R15 Radial Trailer Tire - Load Range C

(2348)

$121.56

Karrier ST205/75R15 KR03 Radial Trailer Tire - Load Range D

(2348)

$123.60

Question:

exist. tires are F78-15 4 ply tires. I need new tires. what would be a comparable replacement tire? Is load range c ok?

asked by: Bob N

Expert Reply:

The modern tire size equivalent to your F78-15 is the size ST205/75-15 like the part # AM10245. This is a Load Range D tire with the capacity of 2,150 lbs at 65 psi.

For a Load Range C in this size you would want the part # AM10244 instead. This tire has a capacity of 1,820 lbs at 50 psi. As long as you go with a tire that has enough weight capacity for your trailer when loaded it doesn't matter which Load Range you go with.

You should note that trailer tires should always be inflated to their max psi rating in order for them to have their full capacity.

expert reply by: Jameson C