No, not weather related...<p>Just as a caution, a few weeks ago I saw a nail head in one of my rear tires. I dropped the car at my friendly local tire shop and walked down the street for lunch. When I returned, the car was still on the lift which isn't a good sign.<p>Turns out that one of the lug nuts was stuck and they couldn't get it out. Before they had Bruno come with the big stick, they wanted me to give the go-ahead. This is on the 7 spoke sport wheels. I decided to have the dealer risk it rather than these thoughtful guys. Anyway there was no nail after all, but if you ever take your wheels off for any reason, probably wouldn't hurt to slap some anti-seize on those lugs before reinstalling. Glad I didn't discover this on the proverbial dark and stormy night. Had a similar problem on BMWs alloys once also.<br>