Rays-Style Gunmetal Mesh Polished Deep Lip Forged Wheels
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2003 Noble M12 GTO 3R Wheels & Rims: Bolt Pattern, Offset & Sizes
Fitting Noble M12 GTO 3R wheels? This page gives the 2003 Noble M12 GTO 3R bolt pattern (4x108), centre bore, factory rim size and the offset range for aftermarket and forged Noble M12 GTO 3R rims: the same spec sheet ANKUSI uses when machining forged wheels for this car.
Quick answer: The 2003 Noble M12 GTO 3R uses a 4x108 bolt pattern with a 63.4 mm centre bore. For aftermarket wheels, 18x8.5J ET30 front / 18x10.5J ET32 rear sits flush.
Forged wheels for the 2003 Noble M12 GTO 3R — drilled 4x108 with a 63.4 mm centre bore, built to the offset you choose. From $220 per wheel, made to order in 20–25 days.
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Noble M12 GTO 3R (2003): 4x108 bolt pattern, 63.4mm center bore, OE F 18x8J ET35 / R 18x10J ET38. Forged wheel fitment specs from ANKUSI.
Bolt Pattern4x108
Center Bore63.4mm
Wheel Load Rating700–850 kg/wheel (Performance / Sports Car segment reference)
Year2003
CategorySports Car
Data check: the bolt pattern and center bore on this page have not yet been confirmed by a second independent source. Measure your hub or ask us before ordering. How we verify
Wheel Size & Offset at a Glance
| Configuration | Wheel Size & Offset |
|---|---|
| Flush Fitment | F 18x8.5J ET30 / R 18x10.5J ET32 |
Forged Wheel Designs for the Noble M12 GTO 3R
Every design below is forged to order, so it can be machined to the Noble M12 GTO 3R's 4x108 bolt pattern and 63.4 mm center bore, with the width and offset calculated for your setup.
OZ Racing-Style Gloss White 15-Spoke Forged Wheels
Monoblock · Gloss White
Bronze Gold Cross-Spoke Forged Wheels
Monoblock · Bronze Gold
APEX-Style Bright Silver 8 Twin-Spoke Mesh Forged Wheels
Monoblock · Bright Silver
Silver Round-Hole Steelie-Style Forged Wheels
Monoblock · Silver
Alfa Romeo OEM-Style Matte Silver 5-Spoke Forged Wheels
Monoblock · Matte Silver
Black / Machined 4-Spoke Forged Wheels
Monoblock · Black Machined
APEX-Style Matte Bronze 8 Y-Spoke Mesh Forged Wheels
Monoblock · Matte Bronze
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
A sedan's wheel spec is a balance point the factory tuned between ride comfort, steering feel, and everyday durability. Forging lets us hold that same structural margin while cutting rotational mass, which is where most of the real-world benefit — quicker steering response, marginally better ride — actually comes from.
The Noble M12 GTO 3R ships from the factory on a 4x108 bolt pattern with a 63.4mm center bore and a F 18x8J ET35 / R 18x10J ET38 wheel. Our flush reference for the Noble M12 GTO 3R is F 18x8.5J ET30 / R 18x10.5J ET32.; our maximum aggressive reference is F 18x9J ET25 / R 18x11J ET28. — beyond that, expect clearance issues against the fender liner without further modification.
Noble M12 GTO 3R OE Wheel Specs
The Noble M12 GTO 3R ships from the factory on 4x108 bolt pattern wheels with a 63.4mm center bore. The stock wheel size is F 18x8J ET35 / R 18x10J ET38, 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 Noble M12 GTO 3R (2003) we drill the 4x108 pattern and cut the centre bore to 63.4mm 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 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 | ET35 | 5.88 in (149 mm) | — | — |
| Flush | 18x8.5J | ET30 | 5.93 in (151 mm) | +1 mm | +11 mm |
| Maximum | 18x9J | ET25 | 5.98 in (152 mm) | +3 mm | +23 mm |
Vehicles With the Same Hub as the Noble M12 GTO 3R (4x108, 63.4 mm Bore)
In our database, 33 other vehicle entries from 4 makes use exactly the same 4x108 bolt pattern and 63.4 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.
4x108 is used by 2.6% of the vehicle pages in our English fitment guide (171 of 6,503); 19.9% of those also use a 63.4 mm center bore.
Hub-Centric Rings for a 63.4 mm Center Bore
A wheel with a center bore larger than 63.4 mm needs a hub-centric ring. The most common combinations:
| Wheel bore | Ring size |
|---|---|
| 64.1 mm | 64.1 → 63.4 mm |
| 65.1 mm | 65.1 → 63.4 mm |
| 66.1 mm | 66.1 → 63.4 mm |
| 66.6 mm | 66.6 → 63.4 mm |
| 73.1 mm | 73.1 → 63.4 mm |
ANKUSI forged wheels are bored to exactly 63.4 mm for this vehicle, so no ring is needed.
Frequently Asked Questions
What bolt pattern (PCD) does the Noble M12 GTO 3R use?
The 2003 Noble M12 GTO 3R uses a 4x108 bolt pattern.
How many lug bolts does the Noble M12 GTO 3R use?
The Noble M12 GTO 3R uses a 4-lug bolt pattern (4x108), so you need a 4-lug forged wheel to bolt straight on.
What is the center bore size on the Noble M12 GTO 3R?
The Noble M12 GTO 3R's center bore is 63.4mm. 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 Noble M12 GTO 3R?
For a flush look with minimal to no rubbing, we recommend F 18x8.5J ET30 / R 18x10.5J ET32 as a starting point on a stock or mildly lowered Noble M12 GTO 3R.
Do I need wheel spacers for my Noble M12 GTO 3R?
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 Noble M12 GTO 3R?
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 5.93" backspacing up front and 7.01" in the rear.
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 Noble M12 GTO 3R?
Yes — the Noble M12 GTO 3R's factory and our recommended flush/max fitments already use staggered sizing (different width front and rear), and ANKUSI can forge matching staggered sets to your target offsets.
Sources and Last Update
Data checked against: avtoreference.com, tirewheelguide.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.
Bolt pattern and center bore on this page come from published fitment references and are still awaiting a second independent check. Last reviewed 2026-09-18. Spotted an error? Email info@ankusi.com and we will verify and correct it.