Just bought the truck can hardly afford the payments, but I'm betting your right they are getting some wear on them. Time to shell out some more money for some tires. My old 2001 1500 Silverado is much more affordable lol easy to work on and the vortec engines are really dependable got 140,000 on it still runs like new. Thanks for your advice I'll try to update my results when I get some new tires.