hey guys, finally picked up a yukon. its an 09 (no afm!) denali awd with 89k miles. in really good shape for its age. had a gmc dealer go through it pruor to purchase, everything was great. new pads and rotors front and back, new tires, black interior with dual dvd players in the headrest. very nice rig. only thing i dont like right now is it has the denali wheels in 22, not 20s like i thought they were. sucks on the backroads we drive on. will be ordering a set of 18" wheels and tires soon. couple questuons if you guys dont mind: 1. what is a ballpark asking price for the 4 22 wheels and tires (cheaper nankang street tires - new though) and one wheel is peeling pretty bad, the others are pretty nice condition 2. on nice roads, this thing rides pike a dream. but back rougher roads...not so much. now a lot is the wheels, i know but this has a lot of body roll. expensive to address this? any good aftermarket sway bar? 3. there is this one bump at a section of road where the bump is across the whole road. in ky. truck its one bump as you go over it. i went over it twice in the denali and when you hit the bump you feel it bump like 4 or 5 times. is the suspension doing something here? my wife in the passenger seat said dhe only felt one bump. i felt 3 to 5 bumps driving.... i love how smooth the power is. a tune would really wake her up.