C6 & C7 Corvette Wheels
The widebody C6 and C7 Corvette shares one purposeful footprint, and we built around it. Project 6GR developed a single dialed-in fitment for the Z06, Grand Sport, and ZR1, with every offset, width, and clearance spec measured against the wider-fendered cars instead of adapted from a base setup. You get the stance the platform was designed for, backed by the fitment work most brands skip.
- Hub-Centric
- Verified Fitment
- TPMS Compatible
- Factory Center Cap Ready
- JWL + VIA Certified
Chassis Fitment
Does This Fit My Corvette?
This setup is engineered for the widebody cars only. The flared fenders on the Z06, Grand Sport, and ZR1 give the 20×12 rear the room it needs to sit right. Base and Z51 cars run a narrower body, so the rear will not clear. Confirm your model before you build.
Factory Specs
C6 & C7 Corvette OEM Fitment
Here is what these cars ran from the factory. The widebody trims came with tall offsets that seat the wheel face deep in the barrel, which is safe but leaves little room for concavity or an aggressive stance. Every one of them shares the same 5×120.65 bolt pattern and 70.3mm hub bore, which is why one properly spec’d setup can serve the whole group.
Bolt Pattern
5x120x.65
Hub Bore
70.3mm
Lug Hardware
M12x1.5
Lug Torque
103 ft-lbs
| Wheel Size | Offset (mm) | OEM Tire Size | Overall Diameter (in) | Trim / Pkg |
|---|---|---|---|---|
| C6 (2005–2013) — Grand Sport | ||||
| F18x9.5 R19x12 |
F+40 R+59 |
F275/35ZR18 R325/30ZR19 |
F25.6" R26.7" |
C6 Grand Sport (2010–2013) |
| C6 (2006–2013) — Z06 | ||||
| F18x9.5 R19x12 |
F+40 R+59 |
F275/35ZR18 R325/30ZR19 |
F25.6" R26.7" |
C6 Z06 |
| C6 (2009–2013) — ZR1 | ||||
| F19x10 R20x12 |
F+40 R+59 |
F285/30ZR19 R335/25ZR20 |
F25.8" R26.6" |
C6 ZR1 |
| C7 (2017–2019) — Grand Sport | ||||
| F19x10 R20x12 |
F+43 R+59 |
F285/30ZR19 R335/25ZR20 |
F25.8" R26.6" |
C7 Grand Sport |
| C7 (2015–2019) — Z06 | ||||
| F19x10 R20x12 |
F+43 R+59 |
F285/30ZR19 R335/25ZR20 |
F25.8" R26.6" |
C7 Z06 / Z07 |
| C7 (2019) — ZR1 | ||||
| F19x10.5 R20x12 |
F+42 R+59 |
F285/30ZR19 R335/25ZR20 |
F25.8" R26.6" |
C7 ZR1 |
Verified Specs
C6 & C7 Corvette Wheel Fitment Guide
One setup covers all six widebody cars. We kept the factory 19×10 front and 20×12 rear diameters and matched the stock tire sizes so overall diameter and speedometer stay honest, then dropped the offset front and rear. The lower offset brings the wheel face out to sit flush with the body line and opens up real concavity, while the 5×120.65 pattern and 70.3mm hub bore keep it hub-centric on every trim.
Bolt Pattern
5×120.65
Hub Bore
70.3mm
Lug Torque
103 ft-lbs
Recommended
19″ + 20″
| Front | Offset | Rear | Offset | Most Common | Overall Diameter | Fitment |
|---|---|---|---|---|---|---|
| 19"/20" Staggered | ||||||
| 19x10 | +30mm | 20x12 | +46mm | F285/30/19 R335/25/20 |
F25.8" R26.6" |
C6 Z06 / GS / ZR1 & C7 Z06 / GS / ZR1 |
Engineering
Why One Fitment is the Right Fitment
Corvette owners are used to scrolling through a wall of sizes and guessing which one clears. We took that decision off the table. The widebody C6 and C7 share the same core geometry, so one properly developed staggered setup covers all six models cleanly.
Staggered is how these cars came from the factory, with a narrower front and a wider rear. A square setup fights the platform’s balance, so we kept the stagger and dialed the widths and offsets to fill the fenders without rubbing. The 19×10 front pairs with a 285/30R19, the 20×12 rear carries a 335/25R20, and both ride on the 5×120.65 pattern with a 70.3mm hub-centric bore.
Offset is where most aftermarket sets go wrong on a Corvette. Too much and the wheel tucks and looks lost in the arch. Too little and the tire pokes and rubs the liner. Our +30 front and +46 rear sit the face flush with the body line and keep the tire inside the fender through suspension travel. That is the spec you get, verified, so you order once and bolt on with confidence.
Unsprung Mass
Forged and Spun Forged: Where The Weight Comes Off
A wheel is unsprung and rotating, so every pound you remove works harder than a pound anywhere else on the car. Lighter wheels let the suspension react faster over bumps, sharpen turn-in, and cut the rotational inertia the brakes and drivetrain have to manage. On a car built to change direction like a Corvette, that is felt, not theoretical.
Our Spun Forged series uses a flow formed barrel that stretches and compacts the aluminum for a thinner, stronger rim than a cast wheel. That construction is where the weight story gets honest, because the number you save depends on which OEM wheel your car left the factory with, and the two chassis did not run the same wheel.
The C7 Z06 and Grand Sport came on the same 19×10 front and 20×12 rear we spec, in cast aluminum, which makes them the clean apples-to-apples comparison. Those factory wheels weigh 25.7 lb up front and 31.8 lb in the rear. Our TEN in Z-Spec runs 24.1 lb front and 28.7 lb rear, which trims 9.4 lb from the set, and most of it comes off the rear where the factory wheel is heaviest. The SEVEN sits about even up front and lighter in the rear for a net drop of roughly 2.4 lb across the set, with a heavier-spoke look and true forged strength.
The C7 ZR1 runs a wider 19×10.5 front, and the C6 Z06 and Grand Sport used a smaller 18×9.5 front and 19×12 rear from the factory. Those are different wheel sizes, so we list them for reference and anchor the direct savings to the C7 Z06 and Grand Sport wheels that match our fitment. The C6 ZR1 is the exception, since it shares the same 20×12 rear.
Step up to the Monoblock Forged series, machined from a single 6061-T6 forging, or the Multi-Piece Forged series for custom lip and concavity work, when you want the strongest construction we build.
| Wheel | Size | Weight | Savings Per Corner | Total Set Savings |
|---|---|---|---|---|
| C7 OEM Reference — Factory Cast (widebody) | ||||
| C7 Z06 / Grand Sport — Front | 19x10 +43 | 25.70 lb | Direct comparison | — |
| C7 Z06 / Grand Sport — Rear | 20x12 +59 | 31.80 lb | Direct comparison | — |
| C7 ZR1 — Front | 19x10.5 +42 | ~27.10 lb | Wider front | — |
| C7 ZR1 — Rear | 20x12 +59 | ~32.85 lb | Same as Z06 rear | — |
| C6 OEM Reference — Factory Fitment | ||||
| C6 Z06 — Front | 18x9.5 +40 | 21.50 lb | Different size | — |
| C6 Z06 — Rear | 19x12 +59 | 26.00 lb | Different size | — |
| C6 Grand Sport — Front | 18x9.5 +40 | 23.00 lb | Different size | — |
| C6 Grand Sport — Rear | 19x12 +59 | 26.50 lb | Different size | — |
| C6 ZR1 — Front | 19x10 +40 | 26.80 lb | Matches C7 size | — |
| C6 ZR1 — Rear | 20x12 +59 | 28.70 lb | Matches C7 size | — |
| SEVEN — Spun Forged (Z-Spec) | ||||
| SEVEN — Front | 19x10 +30 | 26.20 lb | +0.50 lb | — |
| SEVEN — Rear | 20x12 +46 | 30.10 lb | 1.70 lb | 2.40 lb total |
| TEN — Spun Forged (Z-Spec) | ||||
| TEN — Front | 19x10 +30 | 24.10 lb | 1.60 lb | — |
| TEN — Rear | 20x12 +46 | 28.70 lb | 3.10 lb | 9.40 lb total |
Wheel Collection
Project 6GR Wheels for the C6 & C7 Corvette
Every set is built to order and spec’d to the fitment above, so you choose the design and finish and we handle the rest. Custom forged orders run a 6 to 10 week lead time because each wheel is made for your car, not pulled off a shelf.
Real Customer Builds
Corvette Builds Running Project 6GR
The Difference
Why Corvette Owners Run Project 6GR
Chassis-Specific Development
With a strong history in the muscle car world, the Corvette is a natural platform we're comfortable with. Every offset and every millimeter of clearance is developed for this chassis. Project 6GR fitments are tested on real cars, not approximated from a generic sizing chart.
Engineering Standards
Monoblock Forged wheels are machined from a single 6061-T6 aluminum billet. Spun Forged uses a flow formed barrel process that compresses and aligns the aluminum grain structure under heat and pressure. Both constructions exceed the load ratings of every Corvette application, including track use.
Brake Clearance
The OE Corvette brakes can be tricky to clear. All Project 6GR wheels are verified against this application. Grand Sport, Z06 and ZR1 owners don't need to compromise between function and form.
Hub-Centric Precision
Project 6GR wheels are machined to the C6 and C7 Corvette's exact 70.3mm center bore. That means no hub rings, no vibration at speed, and no adapter hardware between the wheel and hub. It fits the way the factory intended; just better.
Common Questions
Corvette Wheel FAQ
Within the same body width, yes. The C6 and C7 widebody cars share the 5x120.65 bolt pattern, the 70.3mm hub bore, and nearly identical rear offsets, so a set spec'd for one widebody car works on the other. Match widebody to widebody and confirm brake clearance on Z06 and ZR1 cars.
All C6 and C7 Corvettes use a 5x120.65 bolt pattern with a 70.3mm center bore. Our wheels are hub-centric to that bore, so the wheel rides on the hub, not the studs.
No. The 20x12 rear needs the flared widebody fender to clear. Base, Z51, and Stingray cars run a narrower body and the tire will contact the fender. Those cars need a different offset and width, and we can spec one for you.
Staggered. The Corvette platform is designed around a narrower front and wider rear, and our fitment keeps that balance with a 19x10 front and 20x12 rear.
Against the C7 Z06 and Grand Sport, yes. Those factory cast wheels weigh 25.7 lb front and 31.8 lb rear at the same 19x10 and 20x12 size we spec, and our TEN in Z-Spec comes in at 24.1 lb front and 28.7 lb rear, a 9.4 lb drop across the set with most of it off the rear. The SEVEN nets about 2.4 lb lighter across the set. The C7 ZR1 uses a wider 19x10.5 front and the C6 Z06 and Grand Sport ran a smaller 18x9.5 and 19x12, so those are different sizes rather than a direct swap. Either way, the weight that comes off is on an unsprung, rotating part where it helps most.
A 285/30R19 up front and a 335/25R20 in the rear, matching the widebody tire sizes so overall diameter stays close to stock.
Custom forged sets are built to order with a 6 to 10 week lead time. Every wheel is made to your fitment and finish.
Dial in Your Corvette
One verified fitment, built forged for the Z06, Grand Sport, and ZR1. Pick your design, choose your finish, and we build it to your car.
Not Sure Yet?
Send a message and get a direct answer from someone who has been fitting this chassis since day one.
