I have a 2002 with Just under 10k miles on it. I noticed a slight bubble on the sidewall of right front tire about the size of a nickle. It's bareley noticeable. Does anyone know what might cause this? I am aware of the tire recall on the older single ply Potenzas, but I don't fall in this catagory. I 'll probably stop by my dealer next week to see if the the tire is defective.