Will the Classic Accessories Spare Tire Cover Fit a ST175/80D13 Trailer Tire

Question:

Good afternoon I have a ST175/80D13 spare tire on my camper, I was only able to find ST175/80R13 would this tire cover work on my spare tire, Thank You.

asked by: Carlos G

Helpful Expert Reply:

Yes, the Classic Accessories Custom Fit Spare Tire Cover, # 052963751109, will work well for your spare camper tire that is size ST175/80D13. A ST175/80D13 tire and a ST175/80R13 tire are the same size. The only difference, which is indicated by the D or R is the construction of the tire. Tires that have a D in the size are bias ply tires and tires with an R are radial tires.

Tires have metal cords underneath the tire tread, on bias ply tires the cords run at a 32 degree angle from the direction of travel. Bias ply tires have a stiffer sidewall and are more ideal in rough terrain or off road. On radial tires, the cords run at a 90 degree angle from the direction of travel and gives the tire more flex. This is the ideal tire if you do a lot of highway driving.

expert reply by: John H