I have a 97 Yukon 4 door that needs new tires. It currently has 245-75R16's on stock rims and 3.73 gears. I would like to go up to 265-75's or 33-12.50R15's, but I have a few questions: 1. How much can I lift the truck by cranking the torsion bars and still be able to get it aligned? I've heard up to 1.5" over stock. 2. Can I use 15" rims on this? I would go with 15x8's with 33x12.50 BFG KO's and 2-3" of lift. 16" tires seem overpriced. 3. Has anybody used a Rough Country 2-3" lift for these vehicles? If so, would you recommend it? 4. If I'm stuck using 16" tires, any recommendations for stock to 2" lift? I'm considering 265's or 285's. 5. Would my mileage take a dive with 33's? My 88 Suburban already hovers around 10, but it seems pretty gutless when compared to the 97's Vortec. This is my first fullsize IFS chevy, so I'm lost when it comes to tire/wheel/lift combos that look good. I can find pictures of 4-6" of lift, but I don't want to go that high, plus I can't afford $1500 in lift. Thanks.