I have a 2008 chevy silverado reg cab short bed 4x4. And I picked up some 20's from 4wheelparts.com for a heck of a price, just couldnt resist. Now I am tryin to figure out what size tires to put on them. I am wanting to go with a semi aggresive looking tire. Like a nitto terra grappler or a goodyear wrangler at/s. I know the oem chevy 20's that are on the 08s are like a 275 55 20. Curious what the biggest tire is that i can fit, and if anyone has done a similar install, thanks!