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2005 Chevrolet Cobalt SS Supercharged Coupe Wheels & Rims: Bolt Pattern, Offset & Sizes
Fitting Chevrolet Cobalt SS Supercharged Coupe wheels? This page gives the 2005 Chevrolet Cobalt SS Supercharged Coupe bolt pattern (5x110), centre bore, factory rim size and the offset range for aftermarket and forged Chevrolet Cobalt SS Supercharged Coupe rims: the same spec sheet ANKUSI uses when machining forged wheels for this car.
Forged wheels for Chevrolet Cobalt — styles, sizes & factory quote →
Chevrolet Cobalt SS Supercharged Coupe (2005): 5x110 bolt pattern, 65.1mm center bore. Factory wheels: 18x7.0J F/R. Reference fitment ranges.
Bolt Pattern5x110
Wheel Bolt/NutM12x1.5 Nut
Center Bore65.1mm
Wheel Load Rating650–750 kg/wheel (Standard Passenger Car segment reference)
Year2005
CategoryCoupe
✓ Data check: the bolt pattern and center bore on this page match an independent fitment reference. Last reviewed September 18, 2026. How we verify
Wheel Size & Offset at a Glance
| Configuration | Wheel Size & Offset |
|---|---|
| Factory (OE) | 18x7.0J F/R |
| Flush Fitment | 19x8.0J at ET35 offset |
| Maximum Aggressive | 19x8.5J at ET30 offset |
Forged Wheel Designs for the Chevrolet Cobalt SS Supercharged Coupe
Every design below is forged to order, so it can be machined to the Chevrolet Cobalt SS Supercharged Coupe's 5x110 bolt pattern and 65.1 mm center bore, with the width and offset calculated for your setup.
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How to Read Wheel Offset & Measurements
Use these two references before ordering: the left diagram shows where each spec (PCD, center bore, offset, width and diameter) is measured on the wheel; the right diagram shows how positive, zero and negative offset shift the wheel face relative to the hub centerline.
ANKUSI Engineering Expert Advice
The Chevrolet Cobalt SS Supercharged Coupe's chassis tuning assumes a certain amount of rotational mass at each corner. Forging lets ANKUSI cut that mass while matching the factory strength rating, which sharpens turn-in and reduces the energy the brakes have to absorb — a real gain on a coupe platform, not just a styling change.
The Chevrolet Cobalt SS Supercharged Coupe runs a 5x110 bolt pattern, 65.1mm center bore, and a 18x7.0J, front and rear, wheel from the factory. Our Flush Fitment reference is 19x8.0J ET35, which tucks the tire under the fender lip on a stock-height Chevrolet Cobalt SS Supercharged Coupe. Our Maximum Aggressive reference is 19x8.5J ET30 — beyond that offset, expect rubbing against the inner fender liner under compression without further trimming.
Chevrolet Cobalt SS Supercharged Coupe OE Wheel Specs
The 2005 Chevrolet Cobalt SS Supercharged Coupe (Coupe) uses a 5x110 bolt pattern with a 65.1mm center bore. Factory wheels are 18x7.0J F/R.
Why the factory spec works for most owners:
- Balances ride comfort with everyday drivability
- A commonly used size for this vehicle class, supporting parts and tire availability
- Maintains clearance for the factory suspension and brake components
- Provides stable, predictable handling across normal driving conditions
ANKUSI builds these wheels — we are the forging factory, not a reseller. For the Chevrolet Cobalt SS Supercharged Coupe (2005) we drill the 5x110 pattern and cut the centre bore to 65.1mm on our own CNC line, so the wheel hub-centres on the car with no spacer rings, in whatever diameter, width and offset you specify.
Converting these ET figures to backspacing? Use the wheel offset and backspacing calculator.
The figures on this page are part of our open wheel fitment dataset — 10,093 vehicles, free to download, CC BY 4.0.
Offset & Backspacing Reference
Backspacing is calculated as wheel width (in) ÷ 2 + offset (mm) ÷ 25.4 + 0.5 (flange allowance):
- OE: 18x7.0J ET42 → ~5.65″ backspacing
- Flush: 19x8.0J ET35 → ~5.88″ backspacing
- Max: 19x8.5J ET30 → ~5.93″ backspacing
Want to check a different width or offset before you order? Use our Offset & Backspacing Calculator to solve the numbers yourself, or looking for your exact Chevrolet spec, or want a wheel built to a custom offset for your Chevrolet Cobalt SS Supercharged Coupe? Contact ANKUSI with your bolt pattern and offset target and we will confirm the correct forged wheel spec for your build.
Frequently Asked Questions
What bolt pattern (PCD) does the Chevrolet Cobalt SS Supercharged Coupe use?
The 2005 Chevrolet Cobalt SS Supercharged Coupe uses a 5x110 bolt pattern.
How many lug bolts does the Chevrolet Cobalt SS Supercharged Coupe use?
The Chevrolet Cobalt SS Supercharged Coupe uses a 5-lug bolt pattern (5x110), so you need a 5-lug forged wheel to bolt straight on.
What is the center bore size on the Chevrolet Cobalt SS Supercharged Coupe?
The Chevrolet Cobalt SS Supercharged Coupe's center bore is 65.1mm. If an aftermarket wheel has a larger center bore than this, hub-centric rings are recommended so the wheel centers on the hub itself rather than relying on the lug bolts alone.
What size are the factory (stock) wheels on the Chevrolet Cobalt SS Supercharged Coupe?
Factory wheels on the Chevrolet Cobalt SS Supercharged Coupe are 18x7.0J F/R.
What is the biggest wheel size I can fit on my Chevrolet Cobalt SS Supercharged Coupe without rubbing?
The most aggressive fitment we recommend without fender work is 19x8.5J at ET30 offset. Going beyond this typically causes rubbing under compression unless you roll the fenders or add camber correction.
What does a flush wheel fitment look like on the Chevrolet Cobalt SS Supercharged Coupe?
For a flush look with minimal to no rubbing, we recommend 19x8.0J at ET35 offset as a starting point on a stock or mildly lowered Chevrolet Cobalt SS Supercharged Coupe.
Do I need wheel spacers for my Chevrolet Cobalt SS Supercharged Coupe?
No. ANKUSI forges each wheel to your exact target offset, including the flush or max specs above, so you get the correct fitment without stacking spacers. Spacers are typically only used to push out an existing OE-offset wheel without replacing it, which isn't necessary when you're ordering a custom-offset forged wheel.
How do I calculate wheel backspacing for my Chevrolet Cobalt SS Supercharged Coupe?
Backspacing (in inches) = wheel width (in) ÷ 2 + offset (mm) ÷ 25.4 + 0.5 (flange allowance). For example, the flush spec above works out to roughly 5.88" of backspacing.
What's the difference between wheel offset and backspacing?
Offset is the distance in millimeters from the wheel's true centerline to its mounting face (positive offset pulls the wheel in, negative pushes it out). Backspacing is the distance in inches from the mounting face to the back edge of the wheel barrel. They describe the same fitment from two different reference points, which is why ANKUSI lists both above — some shops and tuning guides quote offset, others quote backspacing.
Can I run staggered wheels (different sizes front and rear) on my Chevrolet Cobalt SS Supercharged Coupe?
The Chevrolet Cobalt SS Supercharged Coupe runs the same wheel size front and rear from the factory, so staggered fitment is not required. ANKUSI can still forge a staggered set (wider rear) on request if you want a more aggressive stance.
Wheel Installation Reference: Torque, Thread & TPMS
Thread & Fastener: M12x1.5, conical-seat lug nut.
Factory Torque Spec: 136 Nm (100 ft-lb). Covers most Chevrolet passenger cars and crossovers on M12 studs.
TPMS: Vehicles built before the 2008 model year were not federally required to carry factory TPMS in the US, though many manufacturers adopted it earlier; verify whether your specific build has TPMS before ordering sensor-compatible wheels.
Tire Pressure: Always set tire pressure to the value on your vehicle's tire placard (driver's doorjamb or glovebox), not the max PSI printed on the tire sidewall — this is trim- and tire-size-specific and stays the same reference point when you switch to a different wheel and tire combination.
Reference data compiled from published OEM service specifications and cross-checked against independent repair sources; always confirm against your owner's manual or door-jamb placard before installation.