Wheel Help
Thread Starter
Instructor
Joined: Jul 2013
Posts: 117
Likes: 10
From: North Port Florida
Wheel Help
Hi guys,
I'm a new corvette owner (previous Shelby owner) and purchased a 2000 coupe that needs new wheels.
A local guy has a set of C7 Z51 2015 wheels/tires for sale and they are in great shape.
Front245/35-19 with 56 offset
Rear 285/30-20 with 79 offset
My question for you guys is will these fit my car without any problems rubbing?
I'm a new corvette owner (previous Shelby owner) and purchased a 2000 coupe that needs new wheels.
A local guy has a set of C7 Z51 2015 wheels/tires for sale and they are in great shape.
Front245/35-19 with 56 offset
Rear 285/30-20 with 79 offset
My question for you guys is will these fit my car without any problems rubbing?
Thread Starter
Instructor
Joined: Jul 2013
Posts: 117
Likes: 10
From: North Port Florida
C6 and C7 wheels have the same offset specifications which are significantly different than the C5 offset specificatons so the same issues that exist putting C6 wheels on a C5 apply to putting C7 wheels on a C5.
Here is a table of wheel specs:
Backspace/offset dimensions are as follows:
C5 (coupe/vert):
Front 17x8.5", 58mm offset = 7.03" backspace
Rear 18x9.5" 65mm offset = 7.81" backspace
C5 Z06:
Front 17x9.5", 54mm offset = 7.38" backspace
Rear 18x10.5", 58mm offset = 8.03" backspace
C6 (coupe/vert):
Front 18x8.5", 56mm offset = 6.95" backspace
Rear 19x10", 79mm offset = 8.61" backspace
C6 Z06 and C6 GrandSport:
Front 18x9.5", 40mm offset = 7.22" backspace
Rear 19x12", 59mm offset = 8.82" backspace
C5 and C6 wheel circle:
5 on 4.75" (120.65MM)
Center hub dia. 70.3mm
Specifically to answer your question , you will likely need a 1/4" spacer on the rear wheels to just to keep them from rubbing the inner wheel well lining. Front wheels will work OK. Even with the 1/4" spacer (max you can run without installing longer studs) the wheels will appear sunk into the wheel wells. If you are OK with that appearance go for it. If you want the wheels to be flush or near flush to the rear fender as many C5 owners with C6 wheels want, then you will need about a 1" wheel adapter. Wheel adapters bolt to the factory studs and then have their own studs that the wheel mounts to.
Here is a table of wheel specs:
Backspace/offset dimensions are as follows:
C5 (coupe/vert):
Front 17x8.5", 58mm offset = 7.03" backspace
Rear 18x9.5" 65mm offset = 7.81" backspace
C5 Z06:
Front 17x9.5", 54mm offset = 7.38" backspace
Rear 18x10.5", 58mm offset = 8.03" backspace
C6 (coupe/vert):
Front 18x8.5", 56mm offset = 6.95" backspace
Rear 19x10", 79mm offset = 8.61" backspace
C6 Z06 and C6 GrandSport:
Front 18x9.5", 40mm offset = 7.22" backspace
Rear 19x12", 59mm offset = 8.82" backspace
C5 and C6 wheel circle:
5 on 4.75" (120.65MM)
Center hub dia. 70.3mm
Specifically to answer your question , you will likely need a 1/4" spacer on the rear wheels to just to keep them from rubbing the inner wheel well lining. Front wheels will work OK. Even with the 1/4" spacer (max you can run without installing longer studs) the wheels will appear sunk into the wheel wells. If you are OK with that appearance go for it. If you want the wheels to be flush or near flush to the rear fender as many C5 owners with C6 wheels want, then you will need about a 1" wheel adapter. Wheel adapters bolt to the factory studs and then have their own studs that the wheel mounts to.
Thanks 8Vette7 for the info, it sounds like I just need to find some wheels that will fit the C5 without any spacers .
Administrator
Joined: Mar 2001
Posts: 367,767
Likes: 24,683
From: In a parallel universe. Currently own 2014 Stingray Coupe.
C7 of the Year - Modified Finalist 2021
MO Events Coordinator
St. Jude Co-Organizer
St. Jude Donor '03 thru '25
NCM Sinkhole Donor
CI 5, 8 & 11 Veteran
If you like that style wheel, you might want to look into a set of reproduction C7 Z51 wheels that have the proper C5 offset and are in the 17/18 diameter if you don't want to have to buy new tires.
