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2012 Porsche 918 Spyder Prototype Wheels & Rims: Bolt Pattern, Offset & Sizes
Fitting Porsche 918 Spyder Prototype wheels? This page gives the 2012 Porsche 918 Spyder Prototype bolt pattern, centre bore, factory rim size and the offset range for aftermarket and forged Porsche 918 Spyder Prototype rims: the same spec sheet ANKUSI uses when machining forged wheels for this car.
Quick answer: The 2012 Porsche 918 Spyder Prototype uses centre-lock hubs (one central nut per wheel).
Forged wheels for the 2012 Porsche 918 Spyder Prototype, built to the offset you choose. From $220 per wheel, made to order in about 25 days.
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Porsche 918 Spyder Prototype (2012): F 20x9.5J / R 21x12.5J on a centerlock hub. Competition/one-off vehicle -- no aftermarket data published.
Bolt PatternCenterlock (racing hub)
Wheel Bolt/NutCentre-lock single nut (racing hub)
Wheel Load Rating700–850 kg/wheel (Performance / Sports Car segment reference)
Year2012
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 →
Forged wheels for the Porsche 918 Spyder PrototypeMachined to the factory bolt pattern · 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
Competition and prototype hubs are built to a specific series' or shop's homologation rules, not to a retail bolt pattern, so there's no generic 'Flush' or 'Maximum Aggressive' range that means anything here. What forging does contribute is unsprung mass reduction at the exact same structural rating the homologated spec requires — a real, measurable gain in a discipline where every gram of rotational inertia is fought for.
The Porsche 918 Spyder Prototype runs F 20x9.5J / R 21x12.5J on a homologated racing hub, not a standard retail bolt pattern. ANKUSI's motorsport program forges to this exact homologated specification rather than offering generic Flush or Maximum Aggressive references, which would be meaningless on a hub this specialized — contact us with your series or application's exact hub requirements.
Porsche 918 Spyder Prototype Wheel & Hub Specs
Correction (2026-09-20): the centre bore figure previously shown here (71.6mm) was the road-car 911 hub specification and does not apply to this vehicle. Purpose-built Porsche Motorsport centre-lock racing hubs do not use the production hub-centric bore, so the figure has been withdrawn rather than restated. Confirm the exact hub interface with Porsche Motorsport for any build.
The 2012 Porsche 918 Spyder Prototype (Prototype Race Car) runs F 20x9.5J / R 21x12.5J on a centerlock racing hub. These are the factory or homologated racing specifications, not a standard retail bolt pattern.
Why We Don't Publish Generic Aftermarket Fitment for This Vehicle
The Porsche 918 Spyder Prototype is a competition, prototype, vintage or one-off commissioned vehicle. Unlike a mass-produced road car, there is no generic enthusiast community publishing "Flush" or "Maximum Aggressive" offset ranges for it, and its hub uses a centerlock racing assembly rather than a standard lug-bolt pattern. Publishing invented offset numbers for a car like this would be misleading, so we don't.
Custom & Motorsport Wheel Program
ANKUSI forges wheels to exact motorsport specifications -- centerlock, beadlock, homologation-compliant, restoration-correct, or one-off replica builds. Contact ANKUSI with your exact hub pattern, offset and application and we will confirm whether we can build for it.
Custom Forged Wheels for the Porsche 918 Spyder Prototype (2012)
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. Diameter, width, offset, concavity, monoblock or multi-piece construction and the finish are all yours to choose.
We do not hold this pattern wheels on a shelf — they are forged to order, which is why any offset, width and bore combination on this page is buildable rather than limited to a stock list.
Frequently Asked Questions
Does the Porsche 918 Spyder Prototype use a standard bolt pattern?
No. It uses a centerlock racing hub, not a retail lug-bolt pattern, so off-the-shelf aftermarket road wheels do not apply.
Can ANKUSI build wheels for a Porsche 918 Spyder Prototype?
Yes, on a custom-quote basis for restoration, motorsport or replica applications. Contact us with your exact specifications.
Why isn't there a Flush/Max fitment guide for this car?
Flush and Maximum Aggressive figures on our other pages come from verified enthusiast community data for mass-produced road cars. No such generic data exists for this vehicle, so we don't fabricate it.
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.
Forged Wheel Designs for the Porsche 918 Spyder Prototype
Every design below is forged to order, so it can be machined to the Porsche 918 Spyder Prototype's bolt pattern, with the width and offset calculated for your setup.
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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.