Corvette C7 Grand Sport, Z06 & ZR1 (2015-2019) Wheel Fitment Guide
The C7 Corvette Grand Sport, Z06 and ZR1 share the widebody fenders, a 5×4.75 (5×120.65) bolt pattern, a 70.3mm center bore, M12×1.5 60° conical lug nuts and factory 19×10 ET43 front / 20×12 ET59 rear wheels, with a 19×10.5 ZR1 front. This guide covers US model years 2015–2019, carbon-ceramic brake clearance and documented street and track setups.
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 car in this guide shares the hub hardware below. The Grand Sport and Z06 wheels share the same 19×10 ET43 / 20×12 ET59 sizes, and the ZR1 adds a half-inch-wider front. The Grand Sport / Z06 pair is the reference for every "mm out" figure below. The narrow-body Stingray uses different wheels and isn't covered.
Corvette C7 Grand Sport, Z06 & ZR1 Hub & Hardware Specs
All trims — 2015-2019
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 OffsetET43 front (ET42 on the ZR1's 10.5-inch front) / ET59 rear
Brake SystemBrembo 6-piston front / 4-piston rear with iron rotors (371mm / 340mm) on Grand Sport and Z06 · carbon ceramic (394mm / 388mm) with the Z07 package, standard on ZR1
Grand Sport Wheel
Standard · Grand Sport
Front Wheel19×10 ET43
Rear Wheel20×12 ET59
Front Tire285/30ZR19
Rear Tire335/25ZR20
ConstructionCast Aluminum
Applies ToGrand Sport Coupe & Convertible MY2017–2019; Black, Machine Faced, Pearl Nickel and Satin Black with red stripe finishes
The Grand Sport got its own wheel design in the Z06's 19×10 / 20×12 sizes, on Michelin Pilot Super Sport run-flat tires. The Z07 package swaps in Pilot Sport Cup 2 tires and carbon-ceramic brakes. Grand Sport, Z06 and ZR1 rear wheels are the same size, so they swap between these cars.
Z06 Wheel
Standard · Z06
Front Wheel19×10 ET43
Rear Wheel20×12 ET59
Front Tire285/30ZR19
Rear Tire335/25ZR20
ConstructionCast Aluminum
Applies ToZ06 Coupe & Convertible MY2015–2019; Pearl Nickel, Chrome, Spectra Gray with machined groove and Gloss Black finishes
Every finish of the Z06 wheel shares one casting, 19×10J ET43 front and 20×12J ET59 rear, with a 70.3mm hub bore. Tires are Michelin Pilot Super Sport run-flats, or Pilot Sport Cup 2 with the Z07 package. Owners describe the factory Z06 and Grand Sport wheels as cast rather than forged.
ZR1 Wheel
Standard · ZR1
Front Wheel19×10.5 ET42
Rear Wheel20×12 ET59
Front Tire285/30ZR19
Rear Tire335/25ZR20
ConstructionAluminum Alloy
Applies ToZR1 Coupe & Convertible MY2019; finishes include Carbon Flash, Satin Graphite and Chrome
The ZR1 front is half an inch wider at ET42, so it sits about 7mm further out than the Z06 front; the rear matches the Z06. Tires are Pilot Super Sport run-flats, or Cup 2 with the ZTK package. One reference lists the front as 19×10, but GM's spec sheet gives 19×10.5. Owners report ZR1 wheels are flow formed.
Z06 Ten-Spoke (Blade) Wheel
Optional · Z06
Front Wheel19×10 ET43
Rear Wheel20×12 ET59
Front Tire285/30ZR19
Rear Tire335/25ZR20
ConstructionCast Aluminum
Applies ToOptional on Z06 MY2015–2019; Pearl Nickel and Gloss Black with machined groove finishes
A ten-spoke blade design offered on the Z06 alongside the standard wheel, in the same sizes and offsets. Owners list it under its own casting number. Because every widebody C7 wheel shares the rear size, Z06, Grand Sport and ZR1 wheels swap between these cars.
Aftermarket Options
Aftermarket Wheel & Tire Configurations
Every car in this guide shares the same factory wheel position, so 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 19×10 / 20×12 wheels.
| Setup | Tires (front · rear) | Stance | Fit | Drivetrain | Sources |
|---|---|---|---|---|---|
| Square — same size all four corners | |||||
| 18×11ET38 | Varies by build | ●●●●● | May rub · Track build | RWD only | 2 |
| 18×12ET42–46 | Varies by build | ●●●●● | Track build · Mods may be needed | RWD only | 2 |
| Staggered — wider rear | |||||
| 19×10 / 20×12ET28–32 / ET45–50 | Varies by build | ●●●●● | Bolt-on | RWD only | 4 |
| 19×10.5 / 20×12.5ET36 / ET55 | Varies by build | ●●●●● | Bolt-on | RWD only | 8 |
| 19×10.5 / 19×12.5ET35–36 / ET50–55 | Varies by build | ●●●●● | Mods may be needed | RWD only | 7 |
| 18×10 / 19×12ET29–32 / ET50 | 275/35R18 · 325/30R19 | ●●●●● | Bolt-on | RWD only | 3 |
| 19×10 / 19×12.5ET32 / ET55 | Varies by build | ●●●●● | Mods may be needed | RWD only | 2 |
| 19×10.5 / 18×12.5ET36 / ET52 | 285/30R19 · 325/35R18 | ●●●●● | Mods may be needed | RWD only | 1 |
| 19×11 / 19×12.5ET38 / ET55 | Varies by build | ●●●●● | Track build · Mods may be needed | RWD only | 5 |
| 18×11 / 19×12.5ET38 / ET55 | Varies by build | ●●●●● | Track build · Mods may be needed | RWD only | 5 |
| 18×11 / 18×12.5ET38 / ET52 | Varies by build | ●●●●● | Track build · Mods may be needed | RWD only | 10 |
| 18×11 / 18×13ET38 / ET56 | Varies by build | ●●●●● | Track build · Mods may be needed | RWD only | 4 |
| 19×10 / 20×12.5ET30 / ET50 | Not reported | ●●●●● | Not reported | RWD only | 1 |
| 18×12 / 18×13ET42–46 / 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 C7 Grand Sport, Z06 & ZR1
Brake clearance on 18-inch and carbon-ceramic cars.
Carbon ceramics (394mm front / 388mm rear) come with the Z07 package and are standard on the ZR1. Most 18-inch builds here are documented on iron-brake cars; one carbon-ceramic Z06 on an 18-inch front needed a 3mm spacer to clear. Check caliper clearance on any 18-inch wheel, and tell us your brakes when you order.
Wide fronts need camber.
The 11- and 12-inch fronts here sit about 18–26mm out, and every documented car runs a track alignment. Vendor documentation lists −1° to −3° of front camber depending on width, notes rubbing at full lock with taller tires, and says 12-inch fronts give up about a quarter turn of steering lock each way.
Lug nuts and hub.
Every widebody C7 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 19″ 10J ET43 · R 20″ 12J ET59
ET38
Front18mm outRear8mm out
Sources
Well-documented
1 community
1 vendor
An 11-inch wheel at every corner, so the narrower rear sits only about 8mm out while the front moves about 18mm out. Documented on a Grand Sport track car. Vendor documentation calls for negative camber and traction control and PTM switched off, since the factory systems expect a staggered car.
Stance range
flush → poke
OEM
Aggressive
Wheels (All 4)
18×12 (Front and Rear)
Documented ET42 – ET46
Documented offsets
Lip position vs. stock · F 19″ 10J ET43 · R 20″ 12J ET59
ET46
Front22mm outRear13mm out
ET42
Front26mm outRear17mm out
Sources
Well-documented
1 community
1 vendor
The widest square setup documented, for dedicated track cars. Twelve-inch fronts sit 22–26mm out and give up some steering lock; vendor documentation lists camber of at least −2.5° up front and traction control off. The ET42 row is a race car on slicks.
Staggered Setup
Stance range
flush → poke
OEM
Aggressive
Front Wheels
19×10
Documented ET28 – ET32
Rear Wheels
20×12
Documented ET45 – ET50
Documented offsets
Lip position vs. stock · F 10J ET43 · R 12J ET59
ET32 / ET50
Front11mm outRear9mm out
ET28 / ET45
Front15mm outRear14mm out
Sources
Well-documented
3 community
1 vendor
The factory 19/20 sizes moved outboard, so factory tires, sensors and caps carry over. The ET32 / ET50 pair is the common flush step, about 11mm out front and 9mm out rear. If your car is at stock height, start from the top row; the ET28 / ET45 build sits about 4–5mm further out.
Stance
flush → poke
OEM
Aggressive
Front Wheels
19×10.5 ET36
Rear Wheels
20×12.5 ET55
Documented build
Lip position vs. stock · F 10J ET43 · R 12J ET59
ET36 / ET55
Front13mm outRear10mm out
Sources
Well-documented
7 community
1 vendor
Half an inch wider at both ends than stock and the most documented street size here. It keeps the factory 285/30R19 and 335/25R20 tire sizes and sits about 13mm out front and 10mm out rear. Owners run everything from all-season tires to Cup 2s on it.
Stance range
flush → poke
OEM
Aggressive
Front Wheels
19×10.5
Documented ET35 – ET36
Rear Wheels
19×12.5
Documented ET50 – ET55
Documented offsets
Lip position vs. stock · F 10J ET43 · R 20″ 12J ET59
ET36 / ET55
Front13mm outRear10mm out
ET35 / ET50
Front14mm outRear15mm out
Sources
Well-documented
6 community
1 vendor
A 19-inch rear instead of the factory 20, which opens up cheaper and stickier 325/30R19 and 345/30R19 tires. Popular on cars that see track days. The ET50 rear row sits about 5mm further out than the gallery cars; vendor documentation suggests a little negative camber.
Stance range
flush → poke
OEM
Aggressive
Front Wheels
18×10
Documented ET29 – ET32
Rear Wheels
19×12
Documented ET50
Documented offsets
Lip position vs. stock · F 19″ 10J ET43 · R 20″ 12J ET59
ET32 / ET50
Front11mm outRear9mm out
ET29 / ET50
Front14mm outRear9mm out
Sources
Well-documented
2 community
1 vendor
An 18-inch front for more tire sidewall and cheaper tires, on a 19-inch rear. On iron-brake cars the ET32 front is documented as a stock-height fit; the carbon-ceramic Z06 needed a 3mm front spacer, listed here at its effective ET29. Tell us your brakes before choosing an 18-inch front.
Stance
flush → poke
OEM
Aggressive
Front Wheels
19×10 ET32
Rear Wheels
19×12.5 ET55
Documented build
Lip position vs. stock · F 10J ET43 · R 20″ 12J ET59
ET32 / ET55
Front11mm outRear10mm out
Sources
Documented
2 community
Factory front width on a 19-inch rear half an inch wider than stock. Two documented cars, including a C7 ZR1, sitting about 11mm out front and 10mm out rear. The Grand Sport build stretches the tire choice to a 355/30R19 rear, which the vendor flags as possibly needing modifications.
Stance
flush → poke
OEM
Aggressive
Front Wheels
19×10.5 ET36
Rear Wheels
18×12.5 ET52
Documented build
Lip position vs. stock · F 10J ET43 · R 20″ 12J ET59
ET36 / ET52
Front13mm outRear13mm out
Sources
Documented
1 community
An unusual 19-inch front and 18-inch rear, documented on one Z06. The 325/35R18 rear keeps a taller sidewall for launches and track use. Both lips sit about 13mm out of the factory position, so it behaves like the 19×10.5 / 19×12.5 card at the front.
Stance
flush → poke
OEM
Aggressive
Front Wheels
19×11 ET38
Rear Wheels
19×12.5 ET55
Documented build
Lip position vs. stock · F 10J ET43 · R 20″ 12J ET59
ET38 / ET55
Front18mm outRear10mm out
Sources
Well-documented
4 community
1 vendor
An inch wider front than stock on 19-inch track tires. The front lip sits about 18mm out, so every documented car runs a track alignment, and vendor documentation notes the front may rub the inner liner at full lock with taller tires.
Stance
flush → poke
OEM
Aggressive
Front Wheels
18×11 ET38
Rear Wheels
19×12.5 ET55
Documented build
Lip position vs. stock · F 19″ 10J ET43 · R 20″ 12J ET59
ET38 / ET55
Front18mm outRear10mm out
Sources
Well-documented
4 community
1 vendor
An 18-inch front for wider, cheaper track tires on a 19-inch rear. Popular with owners who do both street driving and track days. The front sits about 18mm out, so plan on some negative camber; one Grand Sport owner documented two different wheel designs at this size.
Stance
flush → poke
OEM
Aggressive
Front Wheels
18×11 ET38
Rear Wheels
18×12.5 ET52
Documented build
Lip position vs. stock · F 19″ 10J ET43 · R 20″ 12J ET59
ET38 / ET52
Front18mm outRear13mm out
Sources
Well-documented
9 community
1 vendor
The most documented track size for the C7 widebody: 18-inch wheels at both ends for the widest choice of R-compound tires and slicks. The front lip sits about 18mm out and the rear about 13mm out. Every documented car is a track build with a track alignment.
Stance
flush → poke
OEM
Aggressive
Front Wheels
18×11 ET38
Rear Wheels
18×13 ET56
Documented build
Lip position vs. stock · F 19″ 10J ET43 · R 20″ 12J ET59
ET38 / ET56
Front18mm outRear16mm out
Sources
Well-documented
3 community
1 vendor
A 13-inch rear for the widest 18-inch rear tires, up to 345/30R18 and big slicks. The rear lip sits about 16mm out. Vendor documentation notes that on factory shocks and leaf springs the rear inner lip can touch the upper control arm at full droop, which isn't an issue on the ground.
Stance
flush → poke
OEM
Aggressive
Front Wheels
19×10 ET30
Rear Wheels
20×12.5 ET50
Documented build
Lip position vs. stock · F 10J ET43 · R 12J ET59
ET30 / ET50
Front13mm outRear15mm out
Sources
Documented
1 community
Factory 19-inch front width with a 20-inch rear half an inch wider than stock. One documented owner build, sitting about 13mm out front and 15mm out rear, a little further out than the factory-size ET32 / ET50 pair. Tires weren't reported, so check rear tire width against the 12.5-inch rim.
Stance range
flush → poke
OEM
Aggressive
Front Wheels
18×12
Documented ET42 – ET46
Rear Wheels
18×13
Documented ET56
Documented offsets
Lip position vs. stock · F 19″ 10J ET43 · R 20″ 12J ET59
ET46 / ET56
Front22mm outRear16mm out
ET42 / ET56
Front26mm outRear16mm out
Sources
Well-documented
4 community
1 vendor
The most aggressive documented C7 widebody setup, with twelve-inch fronts on dedicated track cars. The front lip sits 22–26mm out, owners give up some steering lock, and vendor documentation lists at least −3° of front camber. Not a street setup.
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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 C7 Corvette 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 C7 Corvette 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 C7 Corvette: 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 C7 Corvette build →Common Questions
FAQ — Frequently Asked Questions
What are the factory wheel and tire sizes on the C7 Grand Sport, Z06 and ZR1?
The Grand Sport and Z06 use 19×10 ET43 fronts and 20×12 ET59 rears on 285/30ZR19 and 335/25ZR20 tires. The 2019 ZR1 uses a wider 19×10.5 ET42 front with the same rear. Standard tires are Michelin Pilot Super Sport run-flats, and the Z07 and ZTK packages switch to Pilot Sport Cup 2 in the same sizes.
What are the bolt pattern, center bore, lug nut and torque specs?
Widebody C7s use 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). The C8 moved to 5×120, a 66.9mm bore and M14 studs, so C8 wheels don't carry over. FMB machines every set for 60° conical nuts.
What aftermarket wheel sizes fit at stock ride height?
At stock height, owners document 19×10.5 ET36 / 20×12.5 ET55 on factory 285/30R19 and 335/25R20 tires and 19×10 ET32 / 20×12 ET50 on factory-size tires, both sitting roughly 9–13mm outside the factory wheels. An 18×10 ET32 / 19×12 ET50 setup is also documented at stock height, with a brake check needed on carbon-ceramic cars.
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 19×10 ET43 / 20×12 ET59 wheels. Street setups move about 9–15mm; the 11- and 12-inch track fronts at 18–26mm out are the aggressive end.
Do 18-inch wheels clear the carbon-ceramic brakes?
Carbon ceramics come with the Z07 package and are standard on the ZR1, with 394mm front rotors. Most 18-inch builds documented here are on iron-brake cars, and one carbon-ceramic Z06 needed a 3mm front spacer with an 18-inch wheel. Clearance depends on spoke profile as much as diameter, so tell us your brakes and our manufacturing partner checks it.
Can I run a square setup on a C7 Grand Sport or Z06?
Yes, on track cars. Owners document 18×11 ET38 and 18×12 ET42 all around, and vendor documentation lists 18×11 and 18×12 square fitments with negative camber and traction control and PTM switched off. One Grand Sport on 295/35R18 tires rubs slightly under compression. For street use, the staggered setups above are the documented choice.
Do C6 Z06, Grand Sport or ZR1 wheels fit a C7 widebody?
They share the 5×4.75 pattern and 70.3mm bore, and owners run C6 widebody wheels on C7 Z06s. The C6 ZR1-size 19×10 ET40 / 20×12 ET59 sits about 3mm further out at the front. C6 Z06 and Grand Sport wheels are 18×9.5 ET40 / 19×12 ET59, a smaller diameter, so check brake clearance first.
Should I use wheel spacers?
Spacers are rare on the widebody C7 builds documented here. One carbon-ceramic Z06 runs a 3mm front spacer for brake clearance, and vendor documentation lists a possible 3–5mm front spacer with 12-inch fronts. 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. Keeping a cold-weather set at the factory 19×10 ET43 / 20×12 ET59 sizes, or an 18-inch front and 19-inch rear on iron-brake cars, keeps clearances known. Narrower winter tires on 18-inch wheels need a brake check first on carbon-ceramic cars.
Which cars and model years does this guide cover?
US-market C7 Corvette Z06 coupes and convertibles for model years 2015–2019, the Grand Sport for 2017–2019 and the ZR1 for 2019. All three share the widebody fenders and hub hardware. The narrow-body 2014–2019 Stingray and Z51 use 18- or 19-inch fronts at ET56 and have their own guide.
Will Stingray or C8 wheels fit, and do these wheels fit a Stingray?
Stingray wheels share the 5×4.75 pattern but sit far inside these fenders, at 8.5-inch ET56 fronts and 10-inch ET79 rears, and may not clear the Z06 brakes. Widebody wheels stick out past a Stingray's narrower fenders. C8 wheels use the 5×120 pattern and a 66.9mm bore, so they won't bolt on.
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