Tires on these 2008 Chevy Impalas, are wearing prematurely starting @ 10,000 miles. Good Year dealer told me these 2008 are coming from factory slightly unaligned, causing premature wear. They also told me that they had 4 city police cars just in that @ 10,000 miles was in need of new tires all the way around on all four Chevy Impalas! And they won't do anything about replacing mine trying now for over 1 year. Had electrical problems with this sense 24 hours of having my Chevy Impala!