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5x110 to 5x112 PCD Adapter (65.1mm to 66.6mm)
What's included
In every kit
2× hubcentric PCD adapters — bored to 65.1mm → 66.6mm, in your chosen thickness
Supplied without wheel bolts — this kit does not include hardware. Your existing bolts will be too short once the PCD adapter is fitted, so you'll need a set of extended bolts matched to your PCD adapter's thickness. Get in touch and we can source these for you, or fit your own.
5x110 to 5x112 PCD Adapter (65.1mm to 66.6mm)
Converts a 5×110 hub (65.1mm bore) to run 5×112 wheels with a 66.6mm centre bore — built for owners of Alfa Romeo Giulia and Stelvio (2016 on), Maserati MC20 and Maserati GranTurismo/GranCabrio (2023 on) who want to fit Audi, Mercedes or BMW G-series wheels sharing the same 5×112 pattern. Also known as a wheel adapter or bolt pattern adapter — it's the same part.
| From PCD / bore | 5×110, 65.1mm |
| To PCD / bore | 5×112, 66.6mm |
| Thickness | 15mm, 20mm or 25mm |
| Fixing type | Bolt-to-bolt |
| Bolts included | No — correct bolt length depends on your exact car and wheel, contact us to source the right ones |
| Material | 6082-T6 billet aluminium |
| Made in | UK |
Each adapter is hubcentric on both faces — the vehicle-side bore is machined to 65.1mm to locate precisely on your existing 5×110 hub, and the wheel-side register is machined to 66.6mm so 5×112 wheels centre correctly with no reliance on the bolts alone. Alfa Romeo's own wheel bolts use a confirmed M14×1.5 thread; Maserati's exact bolt spec on this platform hasn't been independently confirmed, so please check with us before ordering hardware. Extended bolts matched to your chosen thickness and vehicle are required and sold separately.
Fitment note: the makes and models listed above are a guide to vehicles commonly using this hub and bore combination — they are not a guarantee of fitment. Specifications can vary by trim, model year and market, so please confirm your exact vehicle's PCD and centre bore before ordering. If you're at all unsure, contact us with your vehicle details and we'll confirm fitment before you buy.
5x110 to 5x112 Adapter FAQ
Will this fit my Alfa Romeo Giulia or Maserati MC20?
Yes — this adapter is machined specifically around the 5×110, 65.1mm hub shared by Alfa Romeo Giulia/Stelvio (2016 on), Maserati MC20 and Maserati GranTurismo/GranCabrio (2023 on). Note that older Maserati models — Ghibli, Quattroporte and Levante — use a different pattern (5×114.3, 67.1mm) and are not covered by this adapter. If you're unsure which your car uses, send us your details before ordering.
Can I fit Audi, Mercedes or BMW G-series wheels with this?
Yes, provided those wheels use the 5×112 pattern with a 66.6mm centre bore — the standard bore for Audi A4/A6/Q5, Mercedes, and BMW G20/G30-generation wheels.
Do I need to buy new bolts, or can I reuse my existing ones?
Yes, new bolts are needed. Alfa Romeo's confirmed bolt spec is M14×1.5; Maserati's exact thread on this platform hasn't been independently verified. Contact us with your car and wheel details and we'll confirm or source the correct bolts for you at an extra cost.
What thickness should I choose?
15mm gives a subtle offset change, 20mm is the most common choice for a noticeable stance improvement without pushing clearances, and 25mm is more aggressive — check clearance against your arch and suspension components before choosing 25mm.
Is this adapter hubcentric on both sides?
Yes. The vehicle-side face is machined to 65.1mm to locate on your 5×110 hub exactly as your original wheel does, and the wheel-side face is machined to 66.6mm so 5×112 wheels centre on the adapter itself rather than relying on the bolts to hold the wheel in position.
Browse by marque
VW / Audi
5×100 to 5×112 PCD Adapter
57.1mm to 66.6mm bore
View →BMW
5×120 to 5×112 PCD Adapter
72.6mm to 66.6mm bore
View →BMW
5×120 to 5×114.3 PCD Adapter
72.6mm to 67.1mm bore
View →Porsche
5×130 to 5×112 PCD Adapter
71.6mm to 66.6mm bore
View →Audi / VW
5×112 Centre Bore Adapter
57.1mm to 66.6mm bore
View →VW / Audi
5×100 to 5×114.3 PCD Adapter
57.1mm to 67.1mm bore
View →Ford
5×108 to 5×112 PCD Adapter
63.4mm to 66.6mm bore
View →Alfa / Maserati
5×110 to 5×112 PCD Adapter
65.1mm to 66.6mm bore
View →Ferrari
5×114.3 to 5×112 PCD Adapter
67.1mm to 66.6mm bore
View →Audi / Mercedes
5×112 to 5×120 PCD Adapter
66.6mm to 72.6mm bore
View →Audi / VW
5×112 to 5×100 PCD Adapter
57.1mm bore, both sides
View →VW / Audi
5×100 to 5×120 PCD Adapter
57.1mm to 72.6mm bore
View →VW / Audi
5×100 to 5×130 PCD Adapter
57.1mm to 71.6mm bore
View →Audi / Mercedes
5×112 to 5×130 PCD Adapter
66.6mm to 71.6mm bore
View →BMW
5×120 to 5×130 PCD Adapter
72.6mm to 71.6mm bore
View →Alfa / Maserati
5×110 to 5×112 PCD Adapter
65.1mm to 57.1mm bore
View →BMW
5×120 to 5×112 PCD Adapter
72.6mm to 57.1mm bore
View →Brightstone Engineering Bespoke
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