'Cause your steering rack will snap in half!
A customer of ours brought his lifted Titan in yesterday for a "ticking noise" and when we were driving it into the shop there was a loud SNAP, and a bunch of red fluid on the ground under the front of the truck... the severe angle of the tie rods from the crappy lift on the truck stressed out the rack, and it broke in the center at one of the case joints! Lift kit = Voided Warranty!
Funny thing is, the customer is a BIG A-hole EVERY time he comes in to service, so I call this Karma...