Do I need wheel spacers for my Porsche Cayman GT4 Clubsport?

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.

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 Porsche Cayman GT4 Clubsport?

The Porsche Cayman GT4 Clubsport 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.

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2016 Porsche Cayman GT4 Clubsport Wheels & Rims: Bolt Pattern, Offset & Sizes

Fitting Porsche Cayman GT4 Clubsport wheels? This page gives the 2016 Porsche Cayman GT4 Clubsport bolt pattern, centre bore, factory rim size and the offset range for aftermarket and forged Porsche Cayman GT4 Clubsport rims: the same spec sheet ANKUSI uses when machining forged wheels for this car.

Porsche Cayman GT4 Clubsport (2016): F 18x9.0J ET61 / R 18x10.5J ET50 on a 5*130 hub. Competition/one-off vehicle -- no aftermarket data published.

Bolt Pattern5x130

Wheel Bolt/NutM14x1.5 Bolt

Wheel Load Rating700–850 kg/wheel (Performance / Sports Car segment reference)

Caliper TypeFixed 6-piston front caliper (OEM, Porsche GT/RS)

Year2016

Center Bore71.6mm

✓ Verified by ANKUSI's Engineering Team — IATF 16949 & ISO 9001 certified forged wheel manufacturer, TÜV/SFI/VIA compliant. See our factory & certifications →

Forged wheels for the Porsche Cayman GT4 ClubsportMachined to the factory bolt pattern · 14–24 inch · offset calculated for your car · 3D drawing before production

APEX-Style Matte Silver Mesh Deep-Lip Forged Wheels – BMW M3 E46 / Porsche 911 Fitment (5-Lug)

OZ Racing-Style Gloss Black Multi-Spoke Forged Wheels – Porsche 911 / M3 Fitment (5-Lug)

Porsche OEM-Style Gloss Black Machined Mesh Forged Wheels – Porsche 911 / Panamera Fitment (5-Lug)

Porsche OEM-Style Gloss Black 10 Y-Spoke Machined Face Forged Wheels – Porsche 911 992 / 911 991 Fitment (5-Lug)

See wheel designs

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.

Diagram showing wheel measurement points: centerline, center bore diameter, PCD, offset, rim width and diameter — Centerline, center bore, PCD, offset, width & diameter

Diagram comparing positive, zero, and negative wheel offset relative to the wheel centerline — Positive vs. zero vs. negative offset

ANKUSI Engineering Expert Advice

On a homologated racing or prototype hub, there's no aftermarket offset range to reference — there's no enthusiast community running this exact hub pattern, because every wheel on a build like this is application-specific. Forging still matters here, arguably more than on a road car: less rotational mass translates directly into faster acceleration, shorter braking distances and quicker direction changes, without touching the homologated hub geometry the racing series or one-off build already specifies.

The Porsche Cayman GT4 Clubsport runs F 18x9.0J ET61 / R 18x10.5J ET50 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 Cayman GT4 Clubsport Wheel & Hub Specs

The 2016 Porsche Cayman GT4 Clubsport (GT / Cup Race Car) runs F 18x9.0J ET61 / R 18x10.5J ET50 on a 5*130 homologated bolt pattern. 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 Cayman GT4 Clubsport 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 is homologated to a specific racing application. 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 Cayman GT4 Clubsport (2016)

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.

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Frequently Asked Questions

Does the Porsche Cayman GT4 Clubsport use a standard bolt pattern?
No. It uses a 5*130 homologated bolt pattern, not a retail lug-bolt pattern, so off-the-shelf aftermarket road wheels do not apply.

Can ANKUSI build wheels for a Porsche Cayman GT4 Clubsport?
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.

Forged Wheel Designs for the Porsche Cayman GT4 Clubsport

Every design below is forged to order, so it can be machined to the Porsche Cayman GT4 Clubsport's bolt pattern, with the width and offset calculated for your setup.