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2013 Opel Adam Wheels & Rims: Bolt Pattern, Offset & Sizes
Fitting Opel Adam wheels? This page gives the 2013 Opel Adam bolt pattern (4x100), centre bore, factory rim size and the offset range for aftermarket and forged Opel Adam rims: the same spec sheet ANKUSI uses when machining forged wheels for this car.
Quick answer: The 2013 Opel Adam uses a 4x100 bolt pattern with a 56.6 mm centre bore and M12x1.5 lug nuts. For aftermarket wheels, 18x7.5J ET35 sits flush.
Forged wheels for the 2013 Opel Adam — drilled 4x100 with a 56.6 mm centre bore, built to the offset you choose. From $220 per wheel, made to order in 20–25 days.
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Opel Adam (2013) wheel fitment guide: 4x100 bolt pattern, 56.6mm center bore, factory 17x7J ET44 wheels. Flush and aggressive forged wheel fitment specs from ANKUSI.
Bolt Pattern4x100
Wheel Bolt/NutM12x1.5 Nut
Center Bore56.6mm
Wheel Load Rating650–750 kg/wheel (Standard Passenger Car segment reference)
Year2013
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 |
|---|---|
| Flush Fitment | 18x7.5J at ET35 offset |
Forged Wheel Designs for the Opel Adam
Every design below is forged to order, so it can be machined to the Opel Adam's 4x100 bolt pattern and 56.6 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
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 Opel Adam ships from the factory on a 4x100 bolt pattern with a 56.6mm center bore and a 17x7J ET44 wheel. Our flush reference for the Opel Adam is 18x7.5J ET35.; our maximum aggressive reference is 18x8J ET30. — beyond that, expect clearance issues against the fender liner without further modification.
Opel Adam OE Wheel Specs
The Opel Adam ships from the factory on 4x100 bolt pattern wheels with a 56.6mm center bore. The stock wheel size is 17x7J ET44, offering a balanced ride that suits most owners without any rubbing or clearance concerns.
Why the factory spec works for most owners:
- Balances ride comfort with steering response and highway efficiency.
- Wide tire and wheel availability at the factory diameter keeps replacement costs low.
- Lower unsprung weight than larger aftermarket wheels helps ride quality and acceleration.
- Guaranteed clearance against brake calipers and suspension components.
ANKUSI builds these wheels — we are the forging factory, not a reseller. For the Opel Adam (2013) we drill the 4x100 pattern and cut the centre bore to 56.6mm 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.
- OE 17x7J ET44: backspacing ≈ 5.73"
- Flush 18x7.5J ET35: backspacing ≈ 5.63"
- Max 18x8J ET30: backspacing ≈ 5.68"
Use our offset & backspacing calculator to fine-tune your fitment, or contact ANKUSI for a custom forged wheel quote for your Opel Adam.
Vehicles With the Same Hub as the Opel Adam (4x100, 56.6 mm Bore)
In our database, 58 other vehicle entries from 7 makes use exactly the same 4x100 bolt pattern and 56.6 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.
4x100 is used by 6.9% of the vehicle pages in our English fitment guide (451 of 6,503); 13.1% of those also use a 56.6 mm center bore.
Hub-Centric Rings for a 56.6 mm Center Bore
A wheel with a center bore larger than 56.6 mm needs a hub-centric ring. The most common combinations:
| Wheel bore | Ring size |
|---|---|
| 57.1 mm | 57.1 → 56.6 mm |
| 60.1 mm | 60.1 → 56.6 mm |
| 63.4 mm | 63.4 → 56.6 mm |
| 64.1 mm | 64.1 → 56.6 mm |
| 73.1 mm | 73.1 → 56.6 mm |
ANKUSI forged wheels are bored to exactly 56.6 mm for this vehicle, so no ring is needed.
Frequently Asked Questions
What bolt pattern (PCD) does the Opel Adam use?
The 2013 Opel Adam uses a 4x100 bolt pattern.
How many lug bolts does the Opel Adam use?
The Opel Adam uses a 4-lug bolt pattern (4x100), so you need a 4-lug forged wheel to bolt straight on.
What is the center bore size on the Opel Adam?
The Opel Adam's center bore is 56.6mm. 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 does a flush wheel fitment look like on the Opel Adam?
For a flush look with minimal to no rubbing, we recommend 18x7.5J at ET35 offset as a starting point on a stock or mildly lowered Opel Adam.
Do I need wheel spacers for my Opel Adam?
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 Opel Adam?
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 5.63" 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 Opel Adam?
The Opel Adam 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).
Compiled by the ANKUSI Wheels engineering team, an IATF 16949 and ISO 9001 certified forged wheel factory in Guangzhou.