I have an 03 f150 super crew that I just installed a 2 1/2 inch rough country lift kit and left the stock rims on there for a couple weeks till my 20x9 on 33s arrived and I noticed my cv axle boot was torn on both sides! So I put my new rims on and decided to go ahead and get a whole new axle for both sides versus just changing the boot! Once I got my new precision axles from O'reilly installed and everything tighted I got on the road and it was vibrating terribly bad at about 25+ mph. Never did that before, also had recently front end checked out and lower ball joints replaced and alignment before modifications. Any idea as to why it vibrates horribly now but before it didn't?