mikederie

Will C7 Factory chrome wheels 18 " Front and 19" rear fit a 2003 Corvette?

ChromeC5

I just put some NON-Z51 C7 wheels on my C5. The rears need a 20mm spacer to fit properly. It looks great. The base C7 wheels are the same size and offset as the base C6 wheels.

scorpiofox69

Mike;

Yes they will. I did exhaustive research (much thanks to everyone on this forum for always providing education and laughs along the way-all of you are rockstars!) regarding the "base" C6 and C7 wheels (non-z06 or G/S).

I have a set of "base" 2011 painted oem factory wheels that will be arriving at my door tomorrow. Tires I selected were the non-run flat Firestone Firehawk Indy 500s. And don't forget either to transfer over your existing TPMS or get replacements applicable to your year of car.

The following was taken directly from a forum thread that I had captured not long ago:

Backspace/offset dimensions are as follows:
C5 and C6 wheel circle:
5 on 4.75" (120.65MM)

C5 (coupe/vert):
Front 17x8.5", 58mm offset = 7.03" backspace
Rear 18x9.5" 65mm offset = 7.81" backspace
C6 (coupe/vert):
Front 18x8.5", 56mm offset = 7.45" backspace
Rear 19x10", 79mm offset = 8.61" backspace
C7 Stingray Base Model:
Front 18" x 8.5" +56mm offset = 7.45" backspace
Rear 19" x 10" +79mm offset = 8.61" backspace
C5 Z06:
Front 17x9.5", 54mm offset = 7.38" backspace
Rear 18x10.5", 58mm offset = 8.03" backspace
C6 Z06 and C6 GrandSport:
Front 18x9.5", 40mm offset = 7.22" backspace
Rear 19x12", 59mm offset = 8.82" backspace
C7 Z51 Package:
Front Wheels: 19" x 8.5" +56mm offset = 7.45" backspace
Rear Wheels: 20" x 10" +79mm offset = 8.61" backspace

2014 C7 Stingray Corvette - OEM Stock Tire Sizes
(Michelin Pilot Super Sport run-flat Tires)
Base Model:
Front Tires: P245/40R18
Rear Tires: P285/35R19

With Z51 Package:
Front Tires: P245/35R19
Rear Tires: P285/30R20


Notice that the OEM C7 wheel offsets are the same as on the coupe/vert C6. The wheel diameter of the base C7 wheels is the same as the coupe/vert C6 wheels. The wheel diameters of the C7 with Z51 suspension are an inch larger front and rear than the coupe/vert C6.

Assuming you have OEM C7 wheels (and not some aftermarket clone with unknown specs) you have to do the same thing to rear C7 wheels that you would do to OEM C6 wheels to make them fit the C5. Namely just to clear the inner wheel wells you will need a 1/4" spacer. To bring the wheels out flush to the rear fenders you need a 3/4" to 1" spacer or wheel adapter.