Interesting thoughts....thanks guys. The C4 in question is a 1990. I have been told the C4 goes through tires very fast. Also, I drove the car yesterday. I took a big curve at a decent speed and found the rear end to be a little loose for my taste. Surprised, as I thought an all wheel drive wouldn't be loose at all. It actually felt like the rear wheel broke its bead and came off the rim! By the way, the tires suck...Kumhos.