Wtf is your cold tire pressure...I hope your not reading the side of your tires....mine is only around 29. You need to be reading inside your gas cap if you are running 40psi, that is usually a max psi for tires used for mounting purposes to seat the tire on the rim. So, 43 psi is a shit ton for a cold tire pressure from the factory.
Expensive cars don't phase me that much anymore I guess, yeah it's fast, great....