2008 Saturn Astra Wheels & Rims: Bolt Pattern, Offset & Sizes
Fitting Saturn Astra wheels? This page gives the 2008 Saturn Astra bolt pattern (5x110), centre bore, factory rim size and the offset range for aftermarket and forged Saturn Astra rims: the same spec sheet ANKUSI uses when machining forged wheels for this car.
Quick answer: The 2008 Saturn Astra uses a 5x110 bolt pattern with a 65.1 mm centre bore and M12x1.5 lug nuts. Factory wheels: 16x6.5J ET37, front and rear. For aftermarket wheels, 16x7.0J ET40 sits flush and 17x7.5J ET35 is the most aggressive fit.
Forged wheels for the 2008 Saturn Astra — drilled 5x110 with a 65.1 mm centre bore, built to the offset you choose. From $220 per wheel, made to order in 20–25 days.
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Saturn Astra (2008): 5x110 bolt pattern, 65.1mm center bore. Factory wheels: 16x6.5J at ET37 offset, front and rear. Reference fitment ranges.
Bolt Pattern5x110
Wheel Bolt/NutM12x1.5 Nut
Center Bore65.1mm
Wheel Load Rating650–750 kg/wheel (Standard Passenger Car segment reference)
Year2008
CategoryHatchback
✓ 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) | 16x6.5J F/R |
| Flush Fitment | 16x7.0J at ET40 offset |
| Maximum Aggressive | 17x7.5J at ET35 offset |
Forged Wheel Designs for the Saturn Astra
Every design below is forged to order, so it can be machined to the Saturn Astra's 5x110 bolt pattern and 65.1 mm center bore, with the width and offset calculated for your setup.
Audi RS5 Sedan Forged Wheels
Monoblock
Corvette OEM-Style Polished Silver 5 Y-Spoke Beadlock Off-Road Forged Wheels
Off-Road Beadlock · Polished Silver
Transparent Copper Petal Forged Wheels
Monoblock · Transparent Copper
Silver 5 Y-Spoke Mirror Polished Forged Wheels
Monoblock · Silver
Corvette OEM-Style Gloss Black Red-Ring Beadlock Off-Road Forged Wheels
Off-Road Beadlock · Gloss Black / Red
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
On a compact performance platform, every pound of rotational mass fights the car's natural agility. A forged wheel keeps strength at the factory-rated level while cutting that rotational weight, which is where the driving-feel improvement actually comes from.
The Saturn Astra runs a 5x110 bolt pattern, 65.1mm center bore, and a 16x6.5J, front and rear, wheel from the factory. Our Flush Fitment reference is 16x7.0J ET40, which tucks the tire under the fender lip on a stock-height Saturn Astra. Our Maximum Aggressive reference is 17x7.5J ET35 — beyond that offset, expect rubbing against the inner fender liner under compression without further trimming.
Saturn Astra OE Wheel Specs
The 2008 Saturn Astra (Hatchback) uses a 5x110 bolt pattern with a 65.1mm center bore. Factory wheels are 16x6.5J 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 Saturn Astra (2008) 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.
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 Saturn spec, or want a wheel built to a custom offset for your Saturn Astra? Contact ANKUSI with your bolt pattern and offset target and we will confirm the correct forged wheel spec for your build.
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) | 16x6.5J | ET37 | 5.21 in (132 mm) | — | — |
| Flush | 16x7J | ET40 | 5.57 in (142 mm) | +9 mm | +3 mm |
| Maximum | 17x7.5J | ET35 | 5.63 in (143 mm) | +11 mm | +15 mm |
Vehicles With the Same Hub as the Saturn Astra (5x110, 65.1 mm Bore)
In our database, 139 other vehicle entries from 19 makes use exactly the same 5x110 bolt pattern and 65.1 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.
5x110 is used by 2.2% of the vehicle pages in our English fitment guide (145 of 6,503); 96.6% of those also use a 65.1 mm center bore.
Hub-Centric Rings for a 65.1 mm Center Bore
A wheel with a center bore larger than 65.1 mm needs a hub-centric ring. The most common combinations:
| Wheel bore | Ring size |
|---|---|
| 66.1 mm | 66.1 → 65.1 mm |
| 66.6 mm | 66.6 → 65.1 mm |
| 67.1 mm | 67.1 → 65.1 mm |
| 70.1 mm | 70.1 → 65.1 mm |
| 73.1 mm | 73.1 → 65.1 mm |
ANKUSI forged wheels are bored to exactly 65.1 mm for this vehicle, so no ring is needed.
Frequently Asked Questions
What bolt pattern (PCD) does the Saturn Astra use?
The 2008 Saturn Astra uses a 5x110 bolt pattern.
How many lug bolts does the Saturn Astra use?
The Saturn Astra 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 Saturn Astra?
The Saturn Astra'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 Saturn Astra?
Factory wheels on the Saturn Astra are 16x6.5J F/R.
What is the biggest wheel size I can fit on my Saturn Astra without rubbing?
The most aggressive fitment we recommend without fender work is 17x7.5J at ET35 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 Saturn Astra?
For a flush look with minimal to no rubbing, we recommend 16x7.0J at ET40 offset as a starting point on a stock or mildly lowered Saturn Astra.
Do I need wheel spacers for my Saturn Astra?
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 Saturn Astra?
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 5.57" 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 Saturn Astra?
The Saturn Astra 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.
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: 16x6.5 wheels · 16 inch wheels.
Compiled by the ANKUSI Wheels engineering team, an IATF 16949 and ISO 9001 certified forged wheel factory in Guangzhou.