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I just discovered that one of the new tires which I had installed 1.5 years ago is mounted backwards. The side which says "This Side Inside" is on the outside. The tire is the right rear. The tires are Goodyear F1 Supercars and the car is a 2002 C5Z. I am going to have it mounted correctly tomorrow. Has this caused any damage to the tire?
It may have but I'm not a tire expert. Some tire tread patterns require the tire to be mounted in a specific way to roll with the grain so to say. Turning that tire around may have caused undue wear to the tread pattern and or caused damage to the belts inside. JMHO
Like I said "I'm no tire expert" but I would seek Goodyear help on this one.
Nope, the GY F1 Supercar tire doesn't care which way it rolls .... it is an "asymetric" tread, but it is not uni-directional. By putting the tire on backwards they gave you less performance (grip) while cornering, but other than that no harm has been done.
Years ago, there was concern about steel belted radials belt's "taking a set", and they did not recommend X (cross) rotating them, you were supposed to rotate front to back and keep tire on the same side of car (and running in the same direction). The concern was that after the steel belts took a set, they may seperate if rotated to the other side.
Either this was incorrect or tire manufacture has improved. Almost all new cars now say to X (cross) rotate tires.
A car magazine even ran performance tires backwards and did not see much difference, even in the rain.
So, bottomline, I would say you did no damage. My guess if you ask Goodyear is that they will want to sell you another tire.