Originally Posted by 2011Hemi
17" JK wheels will not clear the caliper without a 1" spacer. There is only about a ½" between the stock 18" wheel and the caliper. Don't forget you need a little room for balancing weights.
Stock WK2 18" wheels are 8" wide with 6½" backspacing and 56mm of offset.
JK 17" wheels are 7½" wide with 5¾" backspacing and 44.45mm of offset.
If the JK wheels would clear the caliper they would sit ¼" further out from the front and have ¾" more room in the back.
Thanks for the information. I knew JK Rubicon wheels won't work on a WK for the same reason so it's good to know it's the same with a WK2.
If anyone close to AZ has some stock 20" WK2 wheels I'd be interested in buying or trading my 18" wheels for them. I've even got BFG ATs already on them!