From E-trailer
Question:
will the st225 75 r15 replace 700 15 on a 1961 airstrean or what would be a better choise thanks
asked by: Gene
Expert Reply:
For an exact replacement tire for your 700-15 tire, we have the Kenda Tire, part # AM10414, which is 7.00-15 tire. Since the LT on this tire is after the tire size, it indicates that the tire can be used as a light truck or trailer tire. The overall diameter of part # AM10414 is 29.3 inches and is a load range E tire which is rated at 2,376 lbs at tire maximum PSI.
The item you selected, Kenda Tire, part # AM3S870, with a tire size of ST225/75D15, will be a little shorter of a tire, as the overall diameter is 28.1 inches. Part # AM3S870 has a wider width of 8.4 inches and is designed to be used on a 6 inch wide wheel. Part # AM3S870 is a load range D tire rated at 2,540 lbs at tire maximum PSI.
Trailer tires should be inflated to their maximum indicated PSI Rating as stated on the tire, for best performance and longer life of the tire.