I just installed a Rough Country 2.5 lift with 33x12.5x15 Destination M/T's on the stock wheels on my 2004 Unlimited. This required Rough Country wheel spacers to avoid rubbing. I also added 1 3/4 inch spring spacers to front to level it updue to front end droop caused by winch weight. After alignment, I am getting a slight steering wheel shake at speeds around 45. After bringing it back to the shop, I am now told vibration is caused by the use of wheel spacers, and if I were to get aftermarket wheels with proper back spacing, ditch the wheel spacers, this vibration can be avoided. Does this make sense?