Question 1

What is a Corvette generation code (C6, C7, C8)?

Accepted Answer

Corvette generation codes designate the specific generation of the platform. C6 refers to the sixth-generation Corvette (2005-2013), C7 refers to the seventh-generation (2014-2019), and C8 refers to the eighth-generation mid-engine Corvette (2020-present). Each generation has distinct wheel fitment specifications. Most importantly, the C8 switched to a 5x120 bolt pattern with a 66.9mm bore and M14x1.5 lug nuts — completely different from the C7 (5x120.65, 70.3mm, M12x1.5), so wheels do not cross between generations.

Question 2

What's the difference between a C8 Stingray, Z06, and ZR1 for wheel fitment?

Accepted Answer

The C8 Stingray (1LT/2LT/3LT/Z51) is the narrowbody variant. The C8 Z06, E-Ray, ZR1, and ZR1X are widebody variants with a 3.6-inch wider rear track than the Stingray. OEM widebody wheels are sized 20x10 front and 21x13 rear, versus 19x8.5 / 20x11 on the Stingray. The hub spec is the same (5x120, 66.9mm), so widebody wheels will mechanically bolt onto a Stingray, but they will not sit correctly — the rears in particular will protrude well outside the body. Each variant requires its own fitment approach.

Question 3

Can I use C7 Corvette wheels on a C8?

Accepted Answer

No. The C8 changed the bolt pattern from the C7's 5x120.65 to 5x120, the center bore from 70.3mm to 66.9mm, the lug stud from M12x1.5 to M14x1.5, and the torque spec from 100 lb-ft to 140 lb-ft. None of this is interchangeable. The bolt pattern difference alone prevents fitment — 5x120 and 5x120.65 are not cross-compatible without re-drilling. The change opened up the C8 to a much larger aftermarket wheel catalog, but C7 wheels do not transfer.

Question 4

Does FMB Wheels build custom forged wheels for the Camaro and other Chevrolet performance platforms?

Accepted Answer

Yes. FMB Wheels builds custom forged monoblock wheels for a range of Chevrolet performance platforms beyond the Corvette, including the 6th-generation Camaro ZL1, SS, and 1LE, and the 5th-generation Camaro ZL1, SS, and Z28. While we have published fitment guides for the most popular platforms, we accept custom build requests for any Chevrolet performance chassis. Use the chassis lookup on this page to find your platform and request a guide or a build.

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