I have a 2005 with 17,000+ miles and all 4 tires are worn and cupped on the inside edge. There are signs of cupping and wear on the outside edge, but only a slight amount. These tires have never felt right, but I think the alignment is out of whack all the way around. The tire people say I should have been running more pressure than the 2psi over recommended and that I should have rotated twice as often as MB recommends on these "high performance" tires. The tires are Dunlop SP Sport 5000, 275/55/17.