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2008 Chevrolet Lumina SS Wheels & Rims: Bolt Pattern, Offset & Sizes
Fitting Chevrolet Lumina SS wheels? This page gives the 2008 Chevrolet Lumina SS bolt pattern (5x120), centre bore, factory rim size and the offset range for aftermarket and forged Chevrolet Lumina SS rims: the same spec sheet ANKUSI uses when machining forged wheels for this car.
Quick answer: The 2008 Chevrolet Lumina SS uses a 5x120 bolt pattern with a 66.9 mm centre bore and M12x1.5 lug nuts. Factory wheels: 18x8.0J ET48, front and rear. For aftermarket wheels, 20x9.0J ET35 sits flush and 21x9.5J ET30 is the most aggressive fit.
Forged wheels for the 2008 Chevrolet Lumina SS — drilled 5x120 with a 66.9 mm centre bore, built to the offset you choose. From $220 per wheel, made to order in 20–25 days.
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Chevrolet Lumina SS (2008): 5x120 bolt pattern, 66.9mm center bore. Factory wheels: 18x8.0J at ET48 offset, front and rear. Reference fitment ranges.
Bolt Pattern5x120
Wheel Bolt/NutM12x1.5 Nut
Center Bore66.9mm
Wheel Load Rating650–750 kg/wheel (Standard Passenger Car segment reference)
Year2008
CategorySedan
✓ Data check: the bolt pattern and center bore on this page match an independent fitment reference. Last reviewed October 14, 2026. How we verify
Wheel Size & Offset at a Glance
| Configuration | Wheel Size & Offset |
|---|---|
| Factory (OE) | 18x8.0J F/R |
| Flush Fitment | 20x9.0J at ET35 offset |
| Maximum Aggressive | 21x9.5J at ET30 offset |
Forged Wheel Designs for the Chevrolet Lumina SS
Every design below is forged to order, so it can be machined to the Chevrolet Lumina SS's 5x120 bolt pattern and 66.9 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 Lumina SS's factory wheel spec reflects a deliberate balance between comfort, steering feel and durability that the engineering team tuned for. Forging lets ANKUSI match that same strength target while trimming rotational mass — the part of a wheel upgrade that actually changes how the car drives, not just how it looks.
The Chevrolet Lumina SS runs a 5x120 bolt pattern, 66.9mm center bore, and a 18x8.0J, front and rear, wheel from the factory. Our Flush Fitment reference is 20x9.0J ET35, which tucks the tire under the fender lip on a stock-height Chevrolet Lumina SS. Our Maximum Aggressive reference is 21x9.5J ET30 — beyond that offset, expect rubbing against the inner fender liner under compression without further trimming.
Chevrolet Lumina SS OE Wheel Specs
The 2008 Chevrolet Lumina SS (Sedan) uses a 5x120 bolt pattern with a 66.9mm center bore. Factory wheels are 18x8.0J F/R.
Why the factory spec works for most owners:
- Balances ride comfort with everyday fuel efficiency
- A widely used size in this segment, so tire and wheel availability stays strong
- Keeps unsprung weight low for stable, predictable handling
- Maintains clearance for the factory brake calipers and suspension components
ANKUSI builds these wheels — we are the forging factory, not a reseller. For the Chevrolet Lumina SS (2008) we drill the 5x120 pattern and cut the centre bore to 66.9mm 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.
A Note on Clearance
Final clearance depends on the exact tire model, suspension height, brake package, alignment and vehicle tolerances. A physical test fit is recommended before production.
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 Lumina SS? Contact ANKUSI with your bolt pattern and offset target and we will confirm the correct forged wheel spec for your build.
Chevrolet Lumina SS: Specs by Model Year
| Year | Bolt pattern | Center bore | Factory wheel |
|---|---|---|---|
| 2004 | 5x120 | 69.6 mm | 17x8J ET48 |
| 2008 | 5x120 | 66.9 mm | 18x8J ET48 |
Check the model year before ordering: the specs change — center bore 69.6 mm → 66.9 mm from 2008.
Offset and Backspacing: Factory Wheel vs Options
Backspacing ≈ width/2 + ET/25.4 + 0.5 in. "Inward" means closer to the suspension; "outward" means closer to the fender lip.
| Setup | Size | ET | Backspacing | Inward vs OE | Outward vs OE |
|---|---|---|---|---|---|
| Factory (OE) | 18x8J | ET48 | 6.39 in (162 mm) | — | — |
| Flush | 20x9J | ET35 | 6.38 in (162 mm) | 0 mm | +26 mm |
| Maximum | 21x9.5J | ET30 | 6.43 in (163 mm) | +1 mm | +37 mm |
Vehicles With the Same Hub as the Chevrolet Lumina SS (5x120, 66.9 mm Bore)
In our database, 161 other vehicle entries from 10 makes use exactly the same 5x120 bolt pattern and 66.9 mm center bore. Factory wheels from these cars bolt on and center on the hub without rings; offset and width still have to be checked.
5x120 is used by 10.3% of the vehicle pages in our English fitment guide (670 of 6,503); 24.2% of those also use a 66.9 mm center bore.
Hub-Centric Rings for a 66.9 mm Center Bore
A wheel with a center bore larger than 66.9 mm needs a hub-centric ring. The most common combinations:
| Wheel bore | Ring size |
|---|---|
| 67.1 mm | 67.1 → 66.9 mm |
| 70.1 mm | 70.1 → 66.9 mm |
| 70.5 mm | 70.5 → 66.9 mm |
| 71.6 mm | 71.6 → 66.9 mm |
| 73.1 mm | 73.1 → 66.9 mm |
ANKUSI forged wheels are bored to exactly 66.9 mm for this vehicle, so no ring is needed.
Frequently Asked Questions
What bolt pattern (PCD) does the Chevrolet Lumina SS use?
The 2008 Chevrolet Lumina SS uses a 5x120 bolt pattern.
How many lug bolts does the Chevrolet Lumina SS use?
The Chevrolet Lumina SS uses a 5-lug bolt pattern (5x120), so you need a 5-lug forged wheel to bolt straight on.
What is the center bore size on the Chevrolet Lumina SS?
The Chevrolet Lumina SS's center bore is 66.9mm. 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 Lumina SS?
Factory wheels on the Chevrolet Lumina SS are 18x8.0J F/R.
What is the biggest wheel size I can fit on my Chevrolet Lumina SS without rubbing?
The most aggressive fitment we recommend without fender work is 21x9.5J 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 Lumina SS?
For a flush look with minimal to no rubbing, we recommend 20x9.0J at ET35 offset as a starting point on a stock or mildly lowered Chevrolet Lumina SS.
Do I need wheel spacers for my Chevrolet Lumina SS?
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 Lumina SS?
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 6.38" 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 Lumina SS?
The Chevrolet Lumina SS 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: TPMS (Tire Pressure Monitoring System) has been federally mandated on all new light vehicles sold in the US since the 2008 model year. If your wheels use OE-style sensors, have them transferred or cloned to the new wheels at installation.
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.
Sources and Last Update
Data checked against: avtoreference.com.
This record is part of the open ANKUSI Wheel Fitment Dataset (DOI 10.5281/zenodo.23241521, CC BY 4.0).
Other cars on the same factory size: 18x8 wheels · 18 inch wheels.
Compiled by the ANKUSI Wheels engineering team, an IATF 16949 and ISO 9001 certified forged wheel factory in Guangzhou.