C6 Z06 Backspacing...
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Melting Slicks
Joined: Jul 2006
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From: West Coast Muscle Cars CA
C6 Z06 Backspacing...
What is the backspacing for the c6 Z06 rear wheels. I know they are 19x12, but what is the backspace? I need to add 1/2 inch to the actual back space of the c6 z06 rear wheels to fill out the fender flares on a C5. Any help will be appreciated... 
Race Director
Joined: Oct 2002
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From: Gone
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St. Jude Donor '03
I believe the C6 Z06 rear wheels are 19x12" with a 59mm offset.
This equates to a 8.92" backspace dimension (hub surface to inside edge of wheel), and a 4.08" frontspace dimension (hub surface to outside lip of wheel).
You need to reduce the backspace dimension (reduce offset) if you want the wheels to stick out more.
If you are intending to use stock Z06 wheels and want them to stick out more to better fit the aftermarket fenders, I'm not sure why the backspace matters at all. Just get some longer studs and run a 1/2" spacer.
If you are spec'ing custom wheels, and need to know optimal offset for the flared fenders, If you are positive you want the outside lip of the wheel to stick out 1/2" more than the Z06 wheels, then a 50mm offset on a 12" wide wheel should get you there.
I put that in bold, because I'm not guaranteeing fitment here, just running the numbers based on your 1/2" "out more" request..
This equates to a 8.92" backspace dimension (hub surface to inside edge of wheel), and a 4.08" frontspace dimension (hub surface to outside lip of wheel).
You need to reduce the backspace dimension (reduce offset) if you want the wheels to stick out more.
If you are intending to use stock Z06 wheels and want them to stick out more to better fit the aftermarket fenders, I'm not sure why the backspace matters at all. Just get some longer studs and run a 1/2" spacer.
If you are spec'ing custom wheels, and need to know optimal offset for the flared fenders, If you are positive you want the outside lip of the wheel to stick out 1/2" more than the Z06 wheels, then a 50mm offset on a 12" wide wheel should get you there.
I put that in bold, because I'm not guaranteeing fitment here, just running the numbers based on your 1/2" "out more" request..
Last edited by Y2Kvert4me; Jun 25, 2007 at 08:08 PM.
