Avoid CA e39 M5?
I've been searching nationally for an e39 M5 for several months, and I've found one in northern California. I'm wondering whether I should be wary of purchasing a CA e39 M5, though, because of the lower octane you guys get.
Would I be better off buying an M5 that hasn't been used in CA?
Now: '89 Porsche 944 S2 black/black, stock and mint!
Ex1: '02 M5 Dinan susp/sways/bars/camber/exhaust/wheels, UUC SSK, MKIV nav
Ex2: '07 335i 6mt sport, BMW performance susp + exhaust