Current mileage is 13,459. I've had 2 tire rotations since new,with oil changes. Please see attached pics of both front tires. The middle treads are almost gone!!The 2 rear tires look much better!!These r the original Goodyear Touring tires, 22's, that come with truck.She needed a front wheel alignment badly,(my fault,slid into a curd with RS frt). Wheel alignment fixed last Friday,after driving with it messed up for bout 1.5k miles. Now there's a vibration and rubbing sound coming from LS front at highway speed. Regardless of the wheel alignment, these tires SHOULDN'T b this worn after 13k miles! My 06 Tahoe Z71,48 month lease, 65k miles when returned 2 Chevy,original tires & brakes and Chevy didn't charge me for replacing either,meaning they either didn't notice wear or they were still good. I shouldn't be buying 2,possibly 4, tires every yr! I'm definitely not buying the same exact tire! I'm thinking Pirellis?