need backspacing for 02 zo6
Drifting
Joined: Jul 2004
Posts: 1,571
Likes: 1
From: Hollywood Md
backspacing / offset?
Ok, I'll take a shot at it.
The rear offset is 58mm or about 2 1/4 inches. That's the distance from the mounting surface to the center of the wheel. If it's actually backspacing that you want add half the wheel width - in this case 5 1/4 inches for a total of 7 1/2 inches backspace. That's from the mounting surface to the inner edge of the wheel. Does that make sense?
The rear offset is 58mm or about 2 1/4 inches. That's the distance from the mounting surface to the center of the wheel. If it's actually backspacing that you want add half the wheel width - in this case 5 1/4 inches for a total of 7 1/2 inches backspace. That's from the mounting surface to the inner edge of the wheel. Does that make sense?
Last edited by cenzo; Mar 28, 2006 at 10:04 AM. Reason: I thought I made a mistake, but I didn't
Race Director
Joined: Oct 2002
Posts: 16,477
Likes: 26
From: Gone
CI 6-7-8-9-10 Veteran
St. Jude Donor '03
Z06 rear wheel has an 8" backspace.
cenzo - your method of calculation is correct, however you didn't include the lip dimension.
A wheel's stated width (in this case 10.5") is measured inside the lips, where the tire seats. Overall width is 1" more, and the backspace dimension always includes that 1/2" of lip, since it is primarily used for gauging clearances around suspension parts and inner fenders.
So, the Z wheel is 11.5" wide overall.
Half that is 5.75", + the offset of 2.25" = 8" backspace.
cenzo - your method of calculation is correct, however you didn't include the lip dimension.
A wheel's stated width (in this case 10.5") is measured inside the lips, where the tire seats. Overall width is 1" more, and the backspace dimension always includes that 1/2" of lip, since it is primarily used for gauging clearances around suspension parts and inner fenders.
So, the Z wheel is 11.5" wide overall.
Half that is 5.75", + the offset of 2.25" = 8" backspace.
Last edited by Y2Kvert4me; Mar 29, 2006 at 06:10 AM.
