If you have a limited slip rear diff, this will happen. It usually wants to push forward while your trying to turn. It will scrub the tires a little more. I never heard a clunck, maybe a chadder. If you do have LS make sure you have the friction modifer added to the gear oil. I recomend Red Line 85w140 gear oil for the ZJ rear differential. It comes with the friction modifer allready inthe oil.
To make sure you have LS, jack up the rear. Parking brake off and in park position. if you can't turn a tire.. its LS.
[FONT=Trebuchet MS]01' Jeep TJ (Jeep #5)
3.5 RE Custom SuperFlex, Raingler, Kilby, Currie, Banks, Borla, American Racing, Custom mods, Always more in the works.