Stud pattern size: CJ: 5 on 5 1/2 YJ 5 on 4 1/2 TJ 5 on 4 1/2 JK 5 on 5 Stock TJ back spacing @ 5.5" Most after market rims size for TJ's buyers 3.75"-4" as it brings it a bit out from the jeep to help with rubbing issues.