2-inch spacer lift on WJ hurts driveline?
I have just had a 2-inch spacer lift installed on my new WJ, which easily allows 31 tires. This one happens to be by DayStar (which is manufactured locally), but over the years I've successfully used the TerraFlex equivalent on both my TJ and XJ. On a service call to my local Jeep dealer, the service rep said that the lift is putting stress on my driveline and is causing a noise (which I haven't heard) and will cause premature U-joint and/or transmission failure. He says that the suspension design on the WJ won't accommodate this kind of lift. (Of course, the dealer will install a "proper" 3-inch lift for me for approx $3000).
Has anybody else heard this story? Is there any evidence of failures with this kind of lift? If so, is there any kind of fix? I'm astounded that Jeep would tell me that my supposedly "Trail Rated" Jeep suspension is so delicate that it can't handle the slight angle caused by this lift. Imagine what would happen if I actually took it off road???