Guy's I just had 4.88's installed in my 2 door x. When i reach 40-45 mph I hear a sound/vibration. I noticed this after I put my top and doors back on. I haven't driven it for the 500 break in miles yet. What are your thoughts??? My current set up is a tera leveling kit with 305 75r 16 km2's.

 

More explanation needed, in the meantime, check your pinion nut for play.

 

excellent idea...and I'd call the installer back and see him asap