Corvette C6 Z06, Grand Sport & ZR1 (2006-2013) Wheel Fitment Guide
The widebody C6 Corvette Z06, Grand Sport and ZR1 use a 5×4.75 (5×120.65) bolt pattern, a 70.3mm center bore, M12×1.5 60° conical lug nuts and factory ET40 front / ET59 rear wheels on 18/19 or ZR1 19/20 sizes. This guide covers US model years 2006–2013, front clearance on wider wheels and carbon-ceramic brake clearance.
About this guide: Fitment data is compiled from owner builds on CorvetteForum and customer cars in wheel-maker fitment galleries, cross-checked against vendor fitment documentation. Use it as research for your build; ride height, tires, and alignment are still your installer's call.
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OEM Setups
Factory Wheel & Tire Configurations
Every widebody C6 shares the hub hardware below. The Z06 and Grand Sport run 18×9.5 ET40 fronts and 19×12 ET59 rears; the ZR1 wheel is half an inch wider up front at the same offsets. Every "mm out" figure below is measured against the Z06 and Grand Sport 9.5-inch ET40 front and 12-inch ET59 rear.
Corvette C6 Z06, Grand Sport & ZR1 Hub & Hardware Specs
All widebody trims — 2006-2013
Bolt Pattern5×4.75 (5×120.65)
Center Bore70.3mm
Fastener TypeLug Nuts
Thread PitchM12×1.5
Seat Type60° conical
Torque Spec100 lb-ft (136 Nm)
Factory OffsetET40 front / ET59 rear (every widebody wheel size)
Brake SystemZ06 & Grand Sport: 355mm front / 340mm rear cross-drilled iron rotors, 6-piston front and 4-piston rear calipers · ZR1, Z06 Carbon Limited Edition and Z07 package: carbon-ceramic 394mm front / 380mm rear
Grand Sport 5-Spoke Wheel (18/19)
Standard · Grand Sport 2010–2013
Front Wheel18×9.5 ET40
Rear Wheel19×12 ET59
Front TireP275/35ZR18
Rear TireP325/30ZR19
ConstructionCast Aluminum
Applies ToGrand Sport Coupe & Convertible MY2010–2013; painted standard, chrome optional
The Grand Sport took the Z06's widebody fenders, wheel sizes and brake sizes on an LS3 car. Its 5-spoke wheel shares the Z06's 18×9.5 ET40 and 19×12 ET59 sizes, so Z06 and Grand Sport wheels swap directly and every setup below applies to both.
Z06 Spider 10-Spoke Wheel (18/19)
Standard · Z06 2009–2013
Front Wheel18×9.5 ET40
Rear Wheel19×12 ET59
Front TireP275/35ZR18
Rear TireP325/30ZR19
ConstructionCast Aluminum
Applies ToZ06 MY2009–2013 standard; Sparkle Silver, Competition Gray and Chrome finishes
The spider-design wheel replaced the original Z06 wheel for 2009 at the same sizes and offsets. Owners describe the factory Z06 wheels as spin-cast, and the same sizes and offsets carried through to the end of production in 2013. Every setup below applies to it unchanged.
Z06 Original Split-Spoke Wheel (18/19)
Standard · Z06 2006–2008
Front Wheel18×9.5 ET40
Rear Wheel19×12 ET59
Front TireP275/35ZR18
Rear TireP325/30ZR19
ConstructionCast Aluminum
Applies ToZ06 MY2006–2008 standard; chrome version offered through MY2010
The launch Z06 wheel, a split-spoke design. Early wheels were made in the US before production moved to an Italian supplier, according to owners. Sizes and offsets match every later Z06 and Grand Sport wheel, so the aftermarket setups below apply to early cars without changes.
ZR1-Style 20-Spoke Wheel (19/20)
Standard · ZR1 · optional Z06 2011–2013
Front Wheel19×10 ET40
Rear Wheel20×12 ET59
Front TireP285/30ZR19
Rear TireP335/25ZR20
ConstructionAluminum alloy (GM does not state cast or forged)
Applies ToZR1 MY2009–2013 (Sterling Silver, chrome optional); 2011 Z06 Carbon Limited Edition (black); Z06 Z07 package MY2011–2013 (Competition Gray); 2013 427 Convertible
GM's largest C6 wheels, standard on the ZR1 and part of the 2011–2013 Z07 package with carbon-ceramic brakes. The front is half an inch wider than the Z06 wheel at the same ET40, so it sits about 6mm further out; the rear matches the Z06 rear position in a 20-inch diameter.
Aftermarket Options
Aftermarket Wheel & Tire Configurations
Each card below is one aftermarket wheel size, and each row on its ladder is one documented build at its effective offset, named by the car it was run on. The Front and Rear figures show how far that build's outer lip sits outside the factory Z06 and Grand Sport 9.5-inch ET40 front and 12-inch ET59 rear wheels.
| Setup | Tires (front · rear) | Stance | Fit | Drivetrain | Sources |
|---|---|---|---|---|---|
| Square — same size all four corners | |||||
| 18×11ET38 | 315/30R18 · 315/30R18 | ●●●●● | Track build · Mods may be needed | RWD only | 2 |
| 18×12ET41–46 / ET46 | 315/30R18 · 315/30R18 | ●●●●● | Track build · Mods may be needed | RWD only | 2 |
| Staggered — wider rear | |||||
| 19×10.5 / 19×12.5 ★ET36–42 / ET55–59 | Varies by build | ●●●●● | Bolt-on · Mods may be needed | RWD only | 7 |
| 19×10 / 20×12ET32–40 / ET50–59 | Not reported | ●●●●● | Bolt-on | RWD only | 2 |
| 18×10 / 19×12.5ET30–32 / ET55 | Varies by build | ●●●●● | Bolt-on · Mods may be needed | RWD only | 9 |
| 18×10 / 19×12ET26–32 / ET47–50 | Varies by build | ●●●●● | Bolt-on · Lowered | RWD only | 7 |
| 19×10 / 19×12ET27–32 / ET47–52 | Varies by build | ●●●●● | Bolt-on | RWD only | 5 |
| 18×10 / 18×12.5ET30–32 / ET52–55 | Varies by build | ●●●●● | Not reported | RWD only | 3 |
| 19×10 / 18×12.5ET32 / ET52 | 295/30R19 · 345/35R18 | ●●●●● | Not reported | RWD only | 1 |
| 19×10.5 / 20×12.5ET36 / ET55 | Varies by build | ●●●●● | Bolt-on | RWD only | 4 |
| 19×10.5 / 18×12.5ET36 / ET52 | 295/30R19 · 345/35R18 | ●●●●● | Not reported | RWD only | 1 |
| 18×11 / 19×12.5ET38 / ET52–55 | Varies by build | ●●●●● | Mods may be needed | RWD only | 10 |
| 19×11 / 19×12.5ET38 / ET55 | Varies by build | ●●●●● | May rub · Mods may be needed | RWD only | 5 |
| 18×11 / 18×12.5ET38 / ET52–55 | Varies by build | ●●●●● | Lowered · Track build · Mods may be needed | RWD only | 17 |
| 18×11 / 18×13ET38 / ET56 | Varies by build | ●●●●● | Track build · Mods may be needed | RWD only | 4 |
| 18×11 / 19×12ET38 / ET50 | Varies by build | ●●●●● | Not reported | RWD only | 2 |
| 19×11 / 19×13ET38 / ET56 | 295/30R19 · 345/30R19 | ●●●●● | Not reported | RWD only | 1 |
| 19×10 / 19×13ET28 / ET52 | 295/30R19 · 345/30R19 | ●●●●● | May rub | RWD only | 1 |
| 19×11 / 18×12.5ET38 / ET52 | 295/30R19 · 335/30R18 | ●●●●● | Track build | RWD only | 1 |
| 18×12 / 19×12.5ET41–46 / ET55 | 315/30R18 · 315/30R19 | ●●●●● | Track build · Mods may be needed | RWD only | 2 |
| 18×12 / 18×13ET46 / ET56 | Varies by build | ●●●●● | Track build · Mods may be needed | RWD only | 5 |
Tap a setup to jump to its full card. Fit: Bolt-on = documented at stock ride height with no fender work reported · Lowered = documented on lowering springs or coilovers · Not reported = owners didn't say. Sources = owner builds (including customer cars in vendor galleries) and vendor fitment-guide setups documented on that card.
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Platform-specific fitment notes — Corvette C6 Z06, Grand Sport & ZR1
Front clearance sets the limit.
Wider fronts are where widebody builds run out of room. Vendor documentation reports front liner contact at full lock on 19×11 ET38 and lost steering lock on 12-inch fronts, and most 11- and 12-inch front builds run −1° to −3° of camber. A 13-inch rear can touch the upper control arm at full droop on factory suspension.
Carbon-ceramic brakes need more room.
The ZR1, Z06 Carbon Limited Edition and Z07-package cars use 394mm carbon-ceramic front rotors. One ZR1 needed a 3mm front spacer to clear an 18×10 front, and a Grand Sport with an aftermarket big-brake kit needed 6mm. Tell us your brake package when you order so caliper clearance is checked.
Lug nuts and hub.
Every C6 uses M12×1.5 lug nuts with a 60° conical seat at 100 lb-ft, on a 5×4.75 bolt pattern and a 70.3mm hub. C8 wheels use 5×120 and won't fit. FMB machines every set for 60° conical lug nuts, so your factory nuts or a conical set of the correct length fits.
Square Setup
Stance
flush → poke
OEM
Aggressive
Wheels (All 4)
18×11 ET38 (Front and Rear)
Documented build
Lip position vs. stock · F 18″ 9.5J ET40 · R 19″ 12J ET59
ET38
Front21mm outRear8mm out
Sources
Well-documented
1 community
1 vendor
An 11-inch wheel at every corner, so the front moves about 21mm out while the narrower rear sits only about 8mm out. Documented on one Z06 track car on coilovers with negative front camber and 315/30R18 tires all around. Vendor documentation calls for traction control and PTM off, since the factory systems expect a staggered car.
Stance range
flush → poke
OEM
Aggressive
Wheels (All 4)
18×12 (Front and Rear)
Documented ET41 – ET46
Documented offsets
Lip position vs. stock · F 18″ 9.5J ET40 · R 19″ 12J ET59
ET46
Front26mm outRear13mm out
ET41 / ET46
Front31mm outRear13mm out
Sources
Well-documented
1 community
1 vendor
The widest square setup documented. Twelve-inch fronts sit about 26–31mm out, so this is a track-only size that needs negative front camber and gives up some steering lock. The spacer build is listed at its effective ET41 front; we'd machine that offset into the wheel.
Staggered Setup
Most Popular
Stance range
flush → poke
OEM
Aggressive
Front Wheels
19×10.5
Documented ET36 – ET42
Rear Wheels
19×12.5
Documented ET55 – ET59
Documented offsets
Lip position vs. stock · F 18″ 9.5J ET40 · R 19″ 12J ET59
ET42 / ET59
Front11mm outRear6mm out
ET36 / ET56
Front17mm outRear9mm out
ET36 / ET55
Front17mm outRear10mm out
Sources
Strongly documented
5 community
2 vendor
The most documented 19/19 setup, and the move owners make from the factory 18/19 or ZR1 19/20 sizes for cheaper, wider 345/30R19 rear tires. The ET36 / ET55 pair sits about 17mm out front and 10mm out rear. If you want a milder look, start from the top row.
Stance range
flush → poke
OEM
Aggressive
Front Wheels
19×10
Documented ET32 – ET40
Rear Wheels
20×12
Documented ET50 – ET59
Documented offsets
Lip position vs. stock · F 9.5J ET40 · R 12J ET59
ET40 / ET59
Front6mm outRear0mm out
ET32 / ET50
Front14mm outRear9mm out
Sources
Well-documented
1 community
1 vendor
The factory ZR1 sizes, which bolt onto a Z06 or Grand Sport about 6mm further out at the front. The vendor's ET32 / ET50 step moves that to about 14mm out front and 9mm rear. Owners choose this for looks; several in owner threads went back to 19/19 for street traction.
Stance range
flush → poke
OEM
Aggressive
Front Wheels
18×10
Documented ET30 – ET32
Rear Wheels
19×12.5
Documented ET55
Documented offsets
Lip position vs. stock · F 9.5J ET40 · R 12J ET59
ET32 / ET55
Front14mm outRear10mm out
ET30 / ET55
Front16mm outRear10mm out
Sources
Well-documented
8 community
1 vendor
The easy upgrade from the factory 18/19 sizes: half an inch wider front and rear, the same diameters and factory-size tires. The front moves about 14–16mm out and the rear about 10mm. Owners run it on everything from summer tires to R-compounds; a 355 rear is where modifications start.
Stance range
flush → poke
OEM
Aggressive
Front Wheels
18×10
Documented ET26 – ET32
Rear Wheels
19×12
Documented ET47 – ET50
Documented offsets
Lip position vs. stock · F 9.5J ET40 · R 12J ET59
ET32 / ET50
Front14mm outRear9mm out
ET29 / ET50
Front17mm outRear9mm out
ET26 / ET47
Front20mm outRear12mm out
Sources
Well-documented
6 community
1 vendor
Factory rear width with a half-inch wider front. Iron-brake cars run ET32 / ET50 at stock height, about 14mm out front and 9mm out rear. The carbon-ceramic ZR1 and a big-brake Grand Sport needed front spacers, listed here at their effective offsets. Tell us your brakes before choosing an 18-inch front.
Stance range
flush → poke
OEM
Aggressive
Front Wheels
19×10
Documented ET27 – ET32
Rear Wheels
19×12
Documented ET47 – ET52
Documented offsets
Lip position vs. stock · F 18″ 9.5J ET40 · R 19″ 12J ET59
ET32 / ET52
Front14mm outRear7mm out
ET32 / ET50
Front14mm outRear9mm out
ET30 / ET50
Front16mm outRear9mm out
ET27 / ET47
Front19mm outRear12mm out
Sources
Well-documented
4 community
1 vendor
Factory widths in 19 inches at both ends. Rows run from about 14mm out front at ET32 to 19mm at the effective ET27. The owner at ET27 / ET47 reports no rubbing on 345/30R19 R888Rs but felt 6mm spacers were too far, so treat that row as close to the limit.
Stance range
flush → poke
OEM
Aggressive
Front Wheels
18×10
Documented ET30 – ET32
Rear Wheels
18×12.5
Documented ET52 – ET55
Documented offsets
Lip position vs. stock · F 18″ 9.5J ET40 · R 19″ 12J ET59
ET32 / ET55
Front14mm outRear10mm out
ET32 / ET52
Front14mm outRear13mm out
ET30 / ET52
Front16mm outRear13mm out
Sources
Documented
3 community
An 18-inch rear in place of the factory 19, which opens up the 335/30R18 and 345/35R18 tire sizes popular for track days. All three documented cars run R-compound tires. The rear moves about 10–13mm out depending on offset, with the front at 14–16mm.
Stance
flush → poke
OEM
Aggressive
Front Wheels
19×10 ET32
Rear Wheels
18×12.5 ET52
Documented build
Lip position vs. stock · F 9.5J ET40 · R 12J ET59
ET32 / ET52
Front14mm outRear13mm out
Sources
Documented
1 community
The same reverse-stagger idea on a 10-inch front. One Grand Sport build, about 14mm out front and 13mm out rear, on a 345/35R18 rear that's taller than the factory 325/30R19. The 10-inch front keeps the factory front tire width class, so this is the milder of the two road-car reverse-stagger builds documented here.
Stance
flush → poke
OEM
Aggressive
Front Wheels
19×10.5 ET36
Rear Wheels
20×12.5 ET55
Documented build
Lip position vs. stock · F 9.5J ET40 · R 12J ET59
ET36 / ET55
Front17mm outRear10mm out
Sources
Well-documented
3 community
1 vendor
Half an inch wider than the factory ZR1 wheels at both ends. It keeps the ZR1's 285/30R19 and 335/25R20 tire sizes and sits about 17mm out front and 10mm out rear against Z06 wheels. A clean street choice for owners who want 20-inch rears.
Stance
flush → poke
OEM
Aggressive
Front Wheels
19×10.5 ET36
Rear Wheels
18×12.5 ET52
Documented build
Lip position vs. stock · F 9.5J ET40 · R 12J ET59
ET36 / ET52
Front17mm outRear13mm out
Sources
Documented
1 community
A reverse stagger: 19-inch front, 18-inch rear. The taller 345/35R18 rear tire roughly matches the factory rear diameter while the front keeps a 19. Documented on one Z06, sitting about 17mm out front and 13mm out rear. It suits owners who want the 18-inch rear tire choice without giving up a 19-inch front look; check the rear rolling diameter against your tire before ordering.
Stance range
flush → poke
OEM
Aggressive
Front Wheels
18×11
Documented ET38
Rear Wheels
19×12.5
Documented ET52 – ET55
Documented offsets
Lip position vs. stock · F 9.5J ET40 · R 12J ET59
ET38 / ET55
Front21mm outRear10mm out
ET38 / ET52
Front21mm outRear13mm out
Sources
Well-documented
9 community
1 vendor
An 11-inch front for a 315/30R18 tire with the factory rear diameter. The front moves about 21mm out, so owners and vendor documentation pair it with some negative front camber; several builds report light modifications. The rear stays close to stock at about 10mm out.
Stance
flush → poke
OEM
Aggressive
Front Wheels
19×11 ET38
Rear Wheels
19×12.5 ET55
Documented build
Lip position vs. stock · F 18″ 9.5J ET40 · R 19″ 12J ET59
ET38 / ET55
Front21mm outRear10mm out
Sources
Well-documented
4 community
1 vendor
An 11-inch front in 19 inches, about 21mm out front and 10mm out rear. Vendor documentation reports the front tire touching the liner at full steering lock and calls for about −2° front camber, though one ZR1 runs it on stock suspension.
Stance range
flush → poke
OEM
Aggressive
Front Wheels
18×11
Documented ET38
Rear Wheels
18×12.5
Documented ET52 – ET55
Documented offsets
Lip position vs. stock · F 18″ 9.5J ET40 · R 19″ 12J ET59
ET38 / ET55
Front21mm outRear10mm out
ET38 / ET52
Front21mm outRear13mm out
Sources
Well-documented
16 community
1 vendor
The most documented C6 widebody track setup, with 18-inch wheels and tires at both ends. The front sits about 21mm out and the rear about 13mm. Nearly every build runs negative front camber and many are lowered, so this is a track-first size; several report light modifications.
Stance
flush → poke
OEM
Aggressive
Front Wheels
18×11 ET38
Rear Wheels
18×13 ET56
Documented build
Lip position vs. stock · F 18″ 9.5J ET40 · R 19″ 12J ET59
ET38 / ET56
Front21mm outRear16mm out
Sources
Well-documented
3 community
1 vendor
A 13-inch rear for the widest 18-inch tires, about 21mm out front and 16mm out rear. Vendor documentation notes the rear wheel lip can contact the upper control arm at full droop on the factory suspension, so this is a track size for cars with that checked.
Stance
flush → poke
OEM
Aggressive
Front Wheels
18×11 ET38
Rear Wheels
19×12 ET50
Documented build
Lip position vs. stock · F 9.5J ET40 · R 12J ET59
ET38 / ET50
Front21mm outRear9mm out
Sources
Documented
2 community
An 11-inch front on the factory rear width. Two Z06 builds, about 21mm out front and 9mm out rear, one on a narrow 285 front tire and one on a 315. The front sits as far out as the 18×11 track setups, so the same negative-camber advice applies if you choose the wider front tire.
Stance
flush → poke
OEM
Aggressive
Front Wheels
19×11 ET38
Rear Wheels
19×13 ET56
Documented build
Lip position vs. stock · F 18″ 9.5J ET40 · R 19″ 12J ET59
ET38 / ET56
Front21mm outRear16mm out
Sources
Documented
1 community
A 13-inch rear for a 345/30R19 tire, about 21mm out front and 16mm out rear. One documented owner build, which the owner calls flush. Rear clearance at this width depends on tire choice; see the 18×13 card for the vendor's control-arm note.
Stance
flush → poke
OEM
Aggressive
Front Wheels
19×10 ET28
Rear Wheels
19×13 ET52
Documented build
Lip position vs. stock · F 18″ 9.5J ET40 · R 19″ 12J ET59
ET28 / ET52
Front18mm outRear20mm out
Sources
Documented
1 community
One of the most outboard street setups here: about 18mm out front and 20mm out rear. The owner reports early front liner rub that wore itself in and says front camber is limited to about −1°. Better suited to owners happy to trim a liner.
Stance
flush → poke
OEM
Aggressive
Front Wheels
19×11 ET38
Rear Wheels
18×12.5 ET52
Documented build
Lip position vs. stock · F 9.5J ET40 · R 12J ET59
ET38 / ET52
Front21mm outRear13mm out
Sources
Documented
1 community
A drag-racing reverse stagger on a ZR1: 19-inch front, 18-inch rear for a taller rear sidewall. About 21mm out front and 13mm out rear. One documented build, run for straight-line launches rather than corners; the same front-clearance limits as the other 11-inch fronts apply on the street.
Stance range
flush → poke
OEM
Aggressive
Front Wheels
18×12
Documented ET41 – ET46
Rear Wheels
19×12.5
Documented ET55
Documented offsets
Lip position vs. stock · F 9.5J ET40 · R 12J ET59
ET46 / ET55
Front26mm outRear10mm out
ET41 / ET55
Front31mm outRear10mm out
Sources
Well-documented
1 community
1 vendor
A 12-inch front for a 315 tire at both ends, about 26–31mm out front and 10mm out rear. Track only: the documented build runs −3° front camber with a 315 tire at every corner. The spacer build is listed at its effective ET41 front, which we would machine into the wheel.
Stance
flush → poke
OEM
Aggressive
Front Wheels
18×12 ET46
Rear Wheels
18×13 ET56
Documented build
Lip position vs. stock · F 18″ 9.5J ET40 · R 19″ 12J ET59
ET46 / ET56
Front26mm outRear16mm out
Sources
Well-documented
4 community
1 vendor
The widest staggered setup documented: about 26mm out front and 16mm out rear. Vendor documentation calls for about −3° front camber and notes lost steering lock. A dedicated track size; tell us your brakes, since some cars needed extra front clearance.
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Our Process
What happens when you build with FMB
Built to the exact spec, not the closest one on a shelf. The setups above come from real C6 Z06, Grand Sport and ZR1 builds, and we CNC-machine every wheel to them directly. If a build needs a spacer to reach its offset, we machine that offset into the wheel instead.
- Choose your setup.
This guide is built to give you what you need to pick a spec with confidence: documented C6 Z06, Grand Sport and ZR1 builds, tire sizes, and how each one fits. If you still have questions, we're happy to help before you order.
- Engineering verification.
Our manufacturing partner confirms wheel specs, including bolt pattern, center bore, brake caliper clearance, backspacing and load rating.
- Render approval.
You approve the design and final specs before we move forward with production.
Our fitment guarantee
Every set is guaranteed to mount on your C6 Z06, Grand Sport or ZR1: 5×4.75 bolt pattern, bored to the 70.3mm hub, machined for 60° conical lug nuts, and made to the exact width and offset you approved.
How a setup sits on your car also depends on ride height, tires and alignment, so choose with your plans in mind.
Start your C6 Corvette build →Common Questions
FAQ — Frequently Asked Questions
What are the factory wheel and tire sizes on the C6 Z06, Grand Sport and ZR1?
The Z06 and Grand Sport use 18×9.5 ET40 fronts and 19×12 ET59 rears on P275/35ZR18 and P325/30ZR19 tires. The ZR1, the Z07 package and the Z06 Carbon Limited Edition use 19×10 ET40 and 20×12 ET59 on P285/30ZR19 and P335/25ZR20. Every factory widebody wheel shares the ET40 front and ET59 rear offsets.
What are the bolt pattern, center bore, lug nut and torque specs?
Every C6 uses a 5×4.75 (5×120.65) bolt pattern, a 70.3mm center bore and M12×1.5 lug nuts with a 60° conical seat, torqued to 100 lb-ft (136 Nm) on clean, dry threads. The C8 moved to 5×120 and a 66.9mm bore, so C8 wheels don't carry over. FMB machines every set for 60° conical lug nuts.
What aftermarket wheel sizes fit at stock ride height?
Vendor documentation lists 18×10 ET30–32 / 19×12.5 ET55, 18×10 ET32 / 19×12 ET50 and 19×10.5 ET36 / 20×12.5 ET55 for stock ride height, and owner builds back each one up, including a Z06 on stock suspension and alignment. They move the front lip about 14–17mm out and the rear about 9–10mm.
What's the difference between flush and aggressive fitment, and how do I read the offset ladder?
Each card is one wheel size and each row is one documented build at its effective offset, named by the car it was run on. The Front and Rear figures show how far the outer lip sits outside the factory 9.5-inch ET40 front and 12-inch ET59 rear. Street setups move about 11–19mm; 11- and 12-inch track fronts at 21–31mm out are the aggressive end.
Will 18-inch wheels clear carbon-ceramic brakes?
Not always. The ZR1, Z06 Carbon Limited Edition and Z07 cars use 394mm carbon-ceramic front rotors, and one ZR1 needed a 3mm front spacer to clear an 18×10 front. Iron-brake Z06 and Grand Sport cars run 18-inch fronts widely. Clearance depends on spoke shape as much as diameter, so tell us your brakes and our manufacturing partner checks it.
Can I run a square setup on a C6 Z06 or Grand Sport?
Yes, mostly for track use. Vendor documentation lists 18×11 ET38 all around with traction control and PTM off, and 18×12 ET46 for dedicated track cars, and owners run both on coilovers with negative front camber. Square setups let you rotate tires but give up rear tire width, so staggered setups remain the common street choice.
Should I use wheel spacers?
Some builds here use them: 3mm on a ZR1 for carbon-ceramic clearance, 6mm on a big-brake Grand Sport and 5mm on two 12-inch front track cars. One Z07 owner felt 6mm all around was too far on 345 rears. Spacer setups appear at their effective offset, and FMB machines that offset into the wheel, so no spacer is needed.
What are the best winter wheel options?
We didn't find a dedicated factory winter wheel for these cars. Owners use the factory 18/19 Z06 or Grand Sport sizes for cold-weather tires because they keep factory clearances. On a carbon-ceramic car, check that an 18-inch front clears the larger front brakes before ordering a winter set.
Which cars and model years does this guide cover, and how do I tell them apart?
US-market widebody C6 Corvettes: the Z06 from MY2006, the ZR1 from MY2009 and the Grand Sport from MY2010, through MY2013. The 8th VIN digit shows the engine: E for the Z06's LS7 and R or T for the ZR1's LS9. Grand Sports share the W (LS3) code with narrow-body cars, so check the window sticker or the wider rear fenders.
Do C7 or narrow-body C6 Corvette wheels fit a C6 Z06 or Grand Sport?
C7 Z06 and Grand Sport sizes bolt on and sit close to the C6 widebody position; one Grand Sport runs 19×10 ET40 / 20×12 ET59. Narrow-body C6 wheels fit the hub but sit about 29mm inside the front and 45mm inside the rear fenders. See the C6 base and Z51 guide and the C7 Grand Sport, Z06 and ZR1 guide.
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Guides for other platforms, built the same way from OEM data and real owner builds.