Mini OEM-Style Gloss Black 12-Spoke Forged Wheels
Mini Cooper / Cooper S Fitment · 4-Lug
2010 Mini John Cooper Works Convertible Wheels & Rims: Bolt Pattern, Offset & Sizes
Fitting Mini John Cooper Works Convertible wheels? This page gives the 2010 Mini John Cooper Works Convertible bolt pattern (4x100), centre bore, factory rim size and the offset range for aftermarket and forged Mini John Cooper Works Convertible rims: the same spec sheet ANKUSI uses when machining forged wheels for this car.
Quick answer: The 2010 Mini John Cooper Works Convertible uses a 4x100 bolt pattern with a 56.5 mm centre bore and M14x1.25 lug bolts. Factory wheels: 17x7J at ET42. For aftermarket wheels, 18x8J ET38 sits flush and 19x8.5J ET35 is the most aggressive fit.
Forged wheels for the 2010 Mini John Cooper Works Convertible — drilled 4x100 with a 56.5 mm centre bore, built to the offset you choose. From $220 per wheel, made to order in about 25 days.
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Mini John Cooper Works Convertible (2010): 4x100 bolt pattern, 56.5mm center bore. Factory wheels: 17x7J. Reference fitment ranges.
Bolt Pattern4x100
Wheel Bolt/NutM14x1.25 Bolt
Center Bore56.5mm
Wheel Load Rating700–850 kg/wheel (Performance / Sports Car segment reference)
Year2010
CategoryPerformance Convertible
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
Built to order by ANKUSI — IATF 16949 & ISO 9001 certified forged wheel manufacturer, TÜV/SFI/VIA compliant. See our factory & certifications →
Wheel Size & Offset at a Glance
| Configuration | Wheel Size & Offset |
|---|---|
| Factory (OE) | 17x7J at ET42 |
| Flush Fitment | 18x8J at ET38 offset |
| Maximum Aggressive | 19x8.5J at ET35 offset |
Forged wheels for the Mini John Cooper Works ConvertibleMachined to the 4x100 bolt pattern and 56.5 mm bore · 14–24 inch · offset calculated for your car · 3D drawing before production
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
Convertibles lose some of the structural rigidity a fixed roof provides, which means the suspension and wheels end up doing more of the work to keep the chassis composed. A forged wheel keeps unsprung mass down without sacrificing the strength margin the factory built in — useful on a platform that's already managing extra flex.
The Mini John Cooper Works Convertible runs a 4x100 bolt pattern, 56.5mm center bore, and a 17x7J at ET42, front and rear, wheel from the factory. Our Flush Fitment reference is 18x8J ET38, which tucks the tire under the fender lip on a stock-height Mini John Cooper Works Convertible. Our Maximum Aggressive reference is 19x8.5J ET35 — beyond that offset, expect rubbing against the inner fender liner under compression without further trimming.
Mini John Cooper Works Convertible OE Wheel Specs
The 2010 Mini John Cooper Works Convertible (Performance Convertible) uses a 4x100 bolt pattern with a 56.5mm center bore. Factory wheels are 17x7J at ET42.
Why the factory spec works for most owners:
- Matches the chassis tuning used to help offset reduced structural rigidity
- Balances ride comfort with the sportier character typical of this body style
- Keeps unsprung weight low for stable handling
- Maintains clearance for the factory brake package and suspension components
ANKUSI builds these wheels — we are the forging factory, not a reseller. For the Mini John Cooper Works Convertible (2010) we drill the 4x100 pattern and cut the centre bore to 56.5mm 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.
Flush Fitment
For a flush look with minimal rubbing, 18x8J ET38 is the recommended starting point on a stock or mildly lowered Mini John Cooper Works Convertible.
Maximum Aggressive Fitment
19x8.5J ET35 is a more aggressive reference setup. Beyond this, expect rubbing under compression without fender rolling or camber correction.
Real-World Fitment Notes
KW V3 coilovers; 18x8.0J ET38 BBS CI-R wheels; Brembo 4-piston front brakes; Michelin Pilot Sport 4S 205/40 R18 tires. Note: 208 hp open-top turbo hot hatch (R57 generation).
5-Tier Configuration Options
A Factory-Style 17x7.0J ET42
Recommended setup: 17x7.0J ET42 | Economy impact: Negligible | Best for: Daily commuting, family use
Appearance: 7/10 | Comfort: 9.5/10 | Install difficulty: ★☆☆☆☆
Estimated cost: $1,200-1,500 (wheels + tires + install)
B Comfortable Upgrade 18x7.5J ET40
Recommended setup: 18x7.5J ET40 | Economy impact: -2 to -4% | Best for: Daily / street
Appearance: 8/10 | Comfort: 9/10 | Install difficulty: ★☆☆☆☆
Estimated cost: $1,950-2,550 (wheels + tires + install)
C Balanced / Flush Fit 18x8.0J ET38
Recommended setup: 18x8.0J ET38 | Economy impact: -4 to -6% | Best for: Street
Appearance: 8.5/10 | Comfort: 8/10 | Install difficulty: ★★☆☆☆
Estimated cost: $2,600-3,400 (wheels + tires + install)
D Aggressive 19x8.5J ET37
Recommended setup: 19x8.5J ET37 | Economy impact: -6 to -9% | Best for: Show / occasional track
Appearance: 9/10 | Comfort: 6.5/10 | Install difficulty: ★★★☆☆
Estimated cost: $3,900-5,000 (wheels + tires + install)
E Max Aggressive 19x8.5J ET35
Recommended setup: 19x8.5J ET35 | Economy impact: -8 to -12% | Best for: Show only
Appearance: 9.5/10 | Comfort: 4/10 | Install difficulty: ★★★★☆
Estimated cost: $4,800-6,200+ (wheels + tires + install)
Performance Comparison Matrix
| Metric | Tier A | Tier B | Tier C | Tier D | Tier E |
|---|---|---|---|---|---|
| Wheel Spec | 17x7.0J ET42 | 18x7.5J ET40 | 18x8.0J ET38 | 19x8.5J ET37 | 19x8.5J ET35 |
| Economy Impact | Negligible | -2 to -4% | -4 to -6% | -6 to -9% | -8 to -12% |
| Appearance | 7/10 | 8/10 | 8.5/10 | 9/10 | 9.5/10 |
| Comfort | 9.5/10 | 9/10 | 8/10 | 6.5/10 | 4/10 |
| Install Difficulty | ★☆☆☆☆ | ★☆☆☆☆ | ★★☆☆☆ | ★★★☆☆ | ★★★★☆ |
| Cost Range | $1,200-1,500 | $1,950-2,550 | $2,600-3,400 | $3,900-5,000 | $4,800-6,200+ |
| Best For | Daily commuting, family use | Daily / street | Street | Show / occasional track | Show only |
Real-World Reference Cases
The examples below are compiled from typical ANKUSI customer configurations and are labeled as reference cases, not individually verified real-world builds.
Case 1: Daily Driver (Factory-Style)
Profile: Everyday driving, prioritizes comfort and low running cost.
Setup: 17x7.0J ET42
Cost: ~$620
Outcome: Minimal visual change, ride and fuel economy essentially unaffected.
Case 2: Balanced Enthusiast (Balanced / Flush Fit)
Profile: Wants a sportier stance without sacrificing daily usability.
Setup: 18x8.0J ET38
Cost: ~$3,000
Outcome: Noticeable visual upgrade, fuel economy drop within the expected range.
Case 3: Show Build (Max Aggressive)
Profile: Built primarily for shows or occasional track/show use.
Setup: 19x8.5J ET35
Cost: ~$5,500
Outcome: Maximum visual impact; daily comfort and fuel economy are heavily compromised, physical test fit required before production.
Decision Guide
1
What's your primary use? Daily commuting → Tier A/B. Weekend street driving → Tier B/C. Show or occasional track use → Tier D/E.
2
What's your budget? Under $800 → Tier A. $800-3,400 → Tier B/C. $3,400+ → Tier D/E.
3
How much does fuel economy matter? Very important → Tier A. Somewhat important → Tier B/C. Not a priority → Tier D/E.
4
Still unsure? Tier C (Balanced / Flush Fit) is the default choice for most Mini John Cooper Works Convertible owners.
Offset & Backspacing Reference
Backspacing is calculated as wheel width (in) ÷ 2 + offset (mm) ÷ 25.4 + 0.5 (flange allowance):
- OE: 17x7J ET42 → ~5.65″ backspacing
- Flush: 18x8J ET38 → ~6.0″ backspacing
- Max: 19x8.5J ET35 → ~6.13″ backspacing
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 Mini spec, or want a wheel built to a custom offset for your Mini John Cooper Works Convertible? Contact ANKUSI with your bolt pattern and offset target and we will confirm the correct forged wheel spec for your build.
Custom Forged Wheels for the Mini John Cooper Works Convertible (2010)
Everything above is reference data. If you want wheels actually built to it, that is what ANKUSI does: we are a forged wheel factory in Guangzhou, China, IATF 16949 and ISO 9001 certified, forging on our own 10,000-ton press and producing over 120,000 wheels a year. Forging blank, CNC machining, finishing, coating and inspection all happen in the same building — nothing is subcontracted and nothing is relabelled from another manufacturer.
Every set is cut to order, so the 4x100 pattern and the 56.5mm centre bore are machined for this car specifically rather than shimmed with adaptor rings. Diameter, width, offset, concavity, monoblock or multi-piece construction and the finish are all yours to choose — most Mini orders on this platform land somewhere between the 18x8J ET38 flush setup and the 19x8.5J ET35 aggressive setup referenced above.
Designs we already tool for the 4x100 pattern — each one is re-cut to your sizes and offsets:
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Rotiform-Style Gloss White 6-Spoke Forged Wheels – Mazda MX-5 / Cooper Fitment (4-Lug)Frequently Asked Questions
What bolt pattern (PCD) does the Mini John Cooper Works Convertible use?
The 2010 Mini John Cooper Works Convertible uses a 4x100 bolt pattern.
How many lug bolts does the Mini John Cooper Works Convertible use?
The Mini John Cooper Works Convertible 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 Mini John Cooper Works Convertible?
The Mini John Cooper Works Convertible's center bore is 56.5mm. 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 Mini John Cooper Works Convertible?
Factory wheels on the Mini John Cooper Works Convertible are 17x7J at ET42.
What is the biggest wheel size I can fit on my Mini John Cooper Works Convertible without rubbing?
The most aggressive fitment we recommend without fender work is 19x8.5J 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 Mini John Cooper Works Convertible?
For a flush look with minimal to no rubbing, we recommend 18x8J at ET38 offset as a starting point on a stock or mildly lowered Mini John Cooper Works Convertible.
Do I need wheel spacers for my Mini John Cooper Works Convertible?
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 Mini John Cooper Works Convertible?
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" 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 Mini John Cooper Works Convertible?
The Mini John Cooper Works Convertible 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.
Vehicles With the Same Hub as the Mini John Cooper Works Convertible (4x100, 56.5 mm Bore)
In our database, 6 other Mini entries use exactly the same 4x100 bolt pattern and 56.5 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); 1.6% of those also use a 56.5 mm center bore.
Mini John Cooper Works Convertible: Specs by Model Year
| Year | Bolt pattern | Center bore | Factory wheel |
|---|---|---|---|
| 2010 | 4x100 | 56.5 mm | 17x7J |
| 2022 | 5x112 | 66.6 mm | 17x7J |
Check the model year before ordering: the specs change — bolt pattern 4x100 → 5x112 from 2022; center bore 56.5 mm → 66.6 mm from 2022.
Hub-Centric Rings for a 56.5 mm Center Bore
A wheel with a center bore larger than 56.5 mm needs a hub-centric ring. The most common combinations:
| Wheel bore | Ring size |
|---|---|
| 57.1 mm | 57.1 → 56.5 mm |
| 60.1 mm | 60.1 → 56.5 mm |
| 63.4 mm | 63.4 → 56.5 mm |
| 64.1 mm | 64.1 → 56.5 mm |
| 73.1 mm | 73.1 → 56.5 mm |
ANKUSI forged wheels are bored to exactly 56.5 mm for this vehicle, so no ring is needed.
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: 17x7 wheels · 17 inch wheels.
Compiled by the ANKUSI Wheels engineering team, an IATF 16949 and ISO 9001 certified forged wheel factory in Guangzhou.
Forged Wheel Designs for the Mini John Cooper Works Convertible
Every design below is forged to order, so it can be machined to the Mini John Cooper Works Convertible's 4x100 bolt pattern and 56.5 mm center bore, with the width and offset calculated for your setup.
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Rays-Style Gunmetal Mesh Polished Deep Lip Forged Wheels
Fiat 500 / Mini Cooper Fitment · 4-Lug
Mini OEM-Style Satin Black Machined Twin 4-Spoke Forged Wheels
Mini Cooper / Clubman Fitment · 4-Lug
BBS-Style Gold Mesh Polished Lip 2-Piece Forged Wheels
Mazda MX-5 / Cooper Fitment · 4-Lug
Rotiform-Style Gloss White 6-Spoke Forged Wheels
Mazda MX-5 / Cooper Fitment · 4-Lug
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.