99Lingenfelter

I'm looking a used set of CCWs for my GS. I've searched for quite a while, but I'm not having much luck.
What is the correct backspacing for C6Z and GS fitment, with 18x11 front and 18x12 rear? Thanks.

Bill Dearborn

The popular setup is 18x11 and 18x13. However, the 18x13 rear wheel will contact the UCA at full droop when you are installing the wheel so you can't fully tighten the wheel down until you put some weight on the suspension. With the 18x13 and 345 rear Hoosiers I had to play with the alignment to keep the outside edge of the rear tires from rubbing on the fenders when cornering hard. I changed camber plates to get less offset on the LCA and pulled shims from behind the UCAs to move the wheel in about a 1/16 in.

The 18x12 would get around both those issues.

Call CCW and ask them what the back spacing is on the wheels they sell for your car.

Bill

99Lingenfelter

Thanks for the info. I talked to CCW today and their answer was:
18x11 with a 7.5 BS on the front
18x12 with a 8.5 BS on the rear.

MUKAK

is this for all ccw wheels? i am also lookin for same setup

99Lingenfelter

That's for all 18x11 F and 18x12 R.