to the BMW side (VW/Audi guy) and i was wounding if anyone heard of BMW voiding your warranty for wheels ? I really want to get rid of these small 17's on my X3, but i paid for an extra warranty and don't want to lose it if i put some 19's or 20's on. I knew alot of people on the vw/audi dealership side, so i could mod my car with now worries. Since this is my wife's, i dont want to take the chance...Thanks for the info