I purchased my 2006 Grand Prix on 05/01/2008. I've had to replace my front brakes & rotars. Somehow the rotars were shot before the brakes were. Also, I had HORRIBLE wearing on the inside of my back tires, so much that it makes weird noises when I drive and if i go over 70 my steering wheel starts to shake. The tires were new when I bought the car, and I've put about 25,000 miles on it. Has anyone else had this problem with their tires wearing funny on the Grand Prix? And What about any OTHER problems, I'd just like a heads up.