18-inch road comfort
- Front
- 18 × 9 inch, ET46 · 235/45 R18
- Rear
- 18 × 10 inch, ET36 · 265/45 R18
Apex retains the factory tyre sizes on wider wheels. The front strut mounts may need adjustment to add negative camber.
2016–present · coupé
Porsche 718 Cayman 982 wheel fitment
The 718 Cayman uses staggered tyres, with factory wheel packages from 18 to 20 inches. Road and track owners often choose wider 18-inch or 19-inch wheels, but rear strut clearance and front camber need checking.
5x130 bolt pattern · 71.6 mm centre bore · Stock wheels: 18 × 8, 18 × 9.5, 19 × 8, 19 × 10, 20 × 8.5, 20 × 10.5 inch · Stock tyres: 235/45 R18, 265/45 R18, 235/40 R19, 265/40 R19, 235/35 R20, 265/35 R20
Updated 2026-10-04 · High source confidence. Check your exact trim and market. How we check specs
Quick specs
| Specification | Value |
|---|---|
| Bolt pattern | |
| Stock tyre sizes | |
| Centre bore | 71.6 mm |
| Fastener and thread | Wheel bolt, M14x1.5 |
| Tightening torque | 160 Nm (confirm in your handbook) |
Stock wheels and tyres
Factory options vary by trim and market. Match your car to the row below and check its tyre placard before using it as a baseline.
| Trim | Axle | Wheel | Tyre |
|---|---|---|---|
| 718 Cayman, standard 18-inch | Front | 18 × 8 inch, ET57 | 235/45 R18 |
| 718 Cayman, standard 18-inch | Rear | 18 × 9.5 inch, ET49 | 265/45 R18 |
| 718 Cayman S, standard 19-inch | Front | 19 × 8 inch, ET57 | 235/40 R19 |
| 718 Cayman S, standard 19-inch | Rear | 19 × 10 inch, ET45 | 265/40 R19 |
| 718 Cayman GTS / GTS 4.0, 20-inch GTS wheel | Front | 20 × 8.5 inch, ET57 | 235/35 R20 |
| 718 Cayman GTS / GTS 4.0, 20-inch GTS wheel | Rear | 20 × 10.5 inch, ET47 | 265/35 R20 |
Explained in our guides
Read these before choosing wheels for the 718 Cayman: they explain the offset, fitment and hub numbers in this guide.
- Wheel offset explained: choosing ET without guessingUnderstand positive and negative wheel offset, calculate inner clearance and outer position, and choose an ET using measurements from your own car.
- Flush, poke and tucked fitment: measure the whole tyreUnderstand flush, poked and tucked wheels, calculate how width and offset change the look, and check clearance beyond a parked side-on photograph.
- Staggered vs square wheels: tyres, rotation and AWDCompare square and staggered wheel setups, calculate front-to-rear tyre diameter, and understand rotation limits and all-wheel-drive requirements.
Popular community setups
Starting points for a build. Read the notes with each setup, especially if your car is lowered or has different brakes.
19-inch road and track
- Front
- 19 × 9 inch, ET50 · 255/35 R19
- Rear
- 19 × 10.5 inch, ET44 · 285/35 R19
Apex documents this wider tyre pair. The front strut mounting position may need adjustment for extra negative camber; check clearance with the actual tyre.
Width and offset guidance
Offset range
Check the exact setup
There is no confirmed range for this car yet. Compare a known wheel with your proposed size and measure both sides.
Common width limit
Measure before ordering
A maximum width has not been confirmed. Tyre shape, ride height and alignment all change the available space.
These figures belong to the setups described here. Combining the widest wheel with either end of the offset range does not guarantee a safe fit. For how ET moves the wheel in and out, read wheel offset explained; for how far the tyre can sit out, see flush, poke and tucked fitment.
Clearance notes
- Porsche specifies 160 Nm for the five-bolt wheel mounting. Use the bolt seat and length required by the wheel manufacturer.
- The examples exclude GT4 and GT4 RS. The GT4 has its own suspension and wheel fitments; the GT4 RS uses centre-lock wheels.
- PCCB and GTS 4.0 brake packages need a specific wheel-clearance check before downsizing. The Porsche approval excludes certain original 18-inch and 19-inch wheel designs from GTS 4.0 use.
- One Porsche press specification prints 235/35 R18 for the base front tyre. The manufacturer wheel approval and other Porsche technical sheets specify 235/45 R18, used here.
- Check full steering lock and suspension travel with the car loaded. Match wheel load rating, tyre load and speed ratings, fastener seats and brake clearance.
See it on your car.
Upload a photo and start with a look that suits the 718 Cayman. Try the wheels, colour and stance before you spend on parts.
An AI preview shows the look. It cannot verify physical fitment.
Run the numbers
These tools start with the 718 Cayman, standard 18-inch front size. Choose your own trim or axle in the calculator if it differs.
Questions
What is the 718 Cayman bolt pattern?
Five-bolt 718 Caymans use 5x130 with a 71.6 mm centre bore and M14x1.5 bolts. The GT4 RS centre-lock arrangement is excluded.
What tyres come on the base Cayman 18-inch wheels?
235/45 R18 front and 265/45 R18 rear, on 18x8 ET57 and 18x9.5 ET49 wheels.
Can a 718 Cayman use 255 front and 285 rear tyres?
Apex documents 255/35 R19 front and 285/35 R19 rear on 19x9 ET50 and 19x10.5 ET44 wheels. Additional front negative camber may be needed.
What wheel size does the Porsche 718 Cayman 982 use?
Factory wheels are 18 × 8 inch, 18 × 9.5 inch, 19 × 8 inch, 19 × 10 inch, 20 × 8.5 inch and 20 × 10.5 inch, depending on trim. The stock table lists the offset for each.
What is the Porsche 718 Cayman 982 centre bore?
71.6 mm. Aftermarket wheels with a larger bore need hub-centric rings sized to it.
What is the Porsche 718 Cayman 982 wheel bolt torque?
160 Nm (about 118 lb-ft) for the original bolts. Confirm in your handbook, especially with aftermarket wheels or bolts.
Specs checked against
- Porsche 718 manufacturer wheel approval and torque
- Porsche Cayman and Cayman S technical specifications
- Porsche press sheet with conflicting front tyre entry
- Porsche hub and wheel-bolt guide
- LFI Cayman hardware cross-check
- Apex 718 Cayman fitment guide
- Design911 M14x1.5 hardware application cross-check
This guide is a starting point, not a fitment guarantee. Specs can differ by market, trim and previous modifications. Confirm all sizes, clearances and fastener requirements with a qualified wheel and tyre professional before buying or fitting parts.
Related cars
More guides from Porsche or cars with the same bolt pattern. A matching pattern alone does not make a wheel interchangeable.