I am the original owner of a stock 05 Tahoe LS with 4wd. It is an AZ and GA SUV- no rust, never off road or tow. Brakes and tires and scheduled fluid changes have been all that's needed. 125,000 miles. My local shop will do a 2" level, Bilsteins all around, 285/70/17 Nitto Grapllers, on Matte Black Pro Comps. Lugs, mount, balance, alignment, install for $2200. I don't plan on selling and would obviously drive till the wheels fall off if I get it done. My concern is my mileage. Am I getting to the point where I'm going to get nickle/dimed to death or even bigger issues? I know I'll never get this money back out of the truck, but am I gambling that it has more life?. Like everyone, every penny counts. No one has a crystal ball, but is this a foolish "investment"? Thanks