Gloss Black Mesh 2-Piece Gold Rivet Deep Lip Forged Wheels
2-Piece · Gloss Black
2018 Porsche 718 Cayman GTS Wheels & Rims: Bolt Pattern, Offset & Sizes
Fitting Porsche 718 Cayman GTS wheels? This page gives the 2018 Porsche 718 Cayman GTS bolt pattern (5x130), centre bore, factory rim size and the offset range for aftermarket and forged Porsche 718 Cayman GTS rims: the same spec sheet ANKUSI uses when machining forged wheels for this car.
Porsche 718 Cayman GTS (2018): 5x130 bolt pattern, 71.6mm center bore. Factory wheels: F: 20x8.5J R: 20x10.5J. Flush and max fitment confirmed on request.
Bolt Pattern5x130
Wheel Bolt/NutM14x1.5 Bolt
Center Bore71.6mm
Wheel Load Rating700–850 kg/wheel (Performance / Sports Car segment reference)
Caliper TypeFixed 4-piston caliper, all four corners (OEM, Porsche)
Year2018
CategorySports Coupe
✓ Data check: the bolt pattern and center bore on this page match an independent fitment reference. Last reviewed September 18, 2026. How we verify
Forged Wheel Designs for the Porsche 718 Cayman GTS
Every design below is forged to order, so it can be machined to the Porsche 718 Cayman GTS's 5x130 bolt pattern and 71.6 mm center bore, with the width and offset calculated for your setup.
Brushed Silver 10 Y-Spoke Concave Forged Wheels
Concave · Brushed Silver
Wheelforce-Style Gold Side-Milled Forged Wheels
Replica · Gold
Transparent Gray 10-Spoke Forged Wheels
Monoblock · Transparent Gray
Metallic Gray 5-Spoke Deep Lip Forged Wheels
Deep Dish · Metallic Gray
Matte Gunmetal Petal 5-Spoke Forged Wheels
Monoblock · Matte Gunmetal
BBS-Style Matte Black 5 Y-Spoke Forged Wheels
Monoblock · Matte Black
See all Porsche 718 Cayman wheel designs Porsche OEM-Style Forged Wheels
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
On a performance-oriented coupe, the wheel is one of the few components where shaving weight has a compounding effect - less rotational mass means less work for the brakes, the drivetrain, and the chassis on every input. A forged wheel gets there without compromising the strength margin the factory engineered in.
We publish the factory specification for the Porsche 718 Cayman GTS below. We have not yet been able to verify aftermarket flush or maximum-aggressive offsets for this exact variant against a source we trust, so we are not listing any - an invented offset is worse than no offset when a wheel has to clear a caliper.
Porsche 718 Cayman GTS OE Wheel Specs
The 2018 Porsche 718 Cayman GTS (Sports Coupe) uses a 5x130 bolt pattern with a 71.6mm center bore. Factory wheels are F: 20x8.5J R: 20x10.5J.
Why the factory spec works for most owners:
- Keeps unsprung weight low to preserve the factory handling balance
- Matches the wider, performance-oriented tire sizing typical of this platform
- Maintains clearance for the factory brake package and suspension geometry
- Balances grip with ride comfort for daily and spirited driving
ANKUSI builds these wheels — we are the forging factory, not a reseller. For the Porsche 718 Cayman GTS (2018) we drill the 5x130 pattern and cut the centre bore to 71.6mm 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.
Aftermarket Fitment: Confirmed on Request
Published aftermarket fitment for this exact variant is still thin, so we have not committed to a flush or maximum-aggressive figure. Our engineering team is still collecting verified data for this variant. In the meantime the factory specification above is accurate and is the safe reference point for ordering.
What we do know: APEX SM-10/EC-7 or BBS LM (19x8.5 ET50 / 19x11 ET50 confirmed no-spacer on a 982 GTS) are common street/track fitments staggered platform, keep the rear wider; verify brake package (steel/PCCB) for barrel clearance
Need a wheel for this car now? Contact ANKUSI with your target diameter, width and offset and our engineers will confirm the correct forged spec against your brake package before anything is cut. You can also use our Offset & Backspacing Calculator to work through the numbers yourself.
Frequently Asked Questions
What bolt pattern (PCD) does the Porsche 718 Cayman GTS use?
The 2018 Porsche 718 Cayman GTS uses a 5x130 bolt pattern.
How many lug bolts does the Porsche 718 Cayman GTS use?
The Porsche 718 Cayman GTS uses a 5-lug bolt pattern (5x130), so you need a 5-lug forged wheel to bolt straight on.
What is the center bore size on the Porsche 718 Cayman GTS?
The Porsche 718 Cayman GTS's center bore is 71.6mm. 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 Porsche 718 Cayman GTS?
Factory wheels on the Porsche 718 Cayman GTS are F: 20x8.5J R: 20x10.5J.
Do I need wheel spacers for my Porsche 718 Cayman GTS?
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 718 Cayman GTS?
The Porsche 718 Cayman GTS 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.