Well... This is one exception to the usual rule... Yes, the tires (not the lift) *could* cause the wheel bearings to act differently than usual. That being said, I highly, highly doubt it, but, no big deal, it takes like two seconds to fix, and you shouldn't pay them to do it, you should do it yourself. Make sure they don't try to pull the same crap when it comes to warranty issues, tho. That's the rule -- I guarantee you they'll try to say the lift and tires cause anything and everything to happen -- from suspension/wheel issues to trouble with your radio. Make sure you fight them when it comes to things that you KNOW couldn't *possibly* be caused from the lift and tires. Take it to the regional manager and beyond, whatever you have to do. The bottom line is, the wheels, tires and lift don't have a lot to do with ANY problems you might run into... Although wheel bearing issues *could* doubtfully be blamed on them... So fight it where it's NECESSARY and take care of your wheel bearings yourself...

HTH,
Chris