20-inch road
- Front
- 20 × 8.5 inch, ET43 · 235/35 R20
- Rear
- 20 × 10 inch, ET36 · 265/35 R20
LFI shows this REX-06 V2 size on a customer's 2013 981, and a near-identical ET42 and ET37 custom set on another, with the factory 20-inch tyre sizes.
2013–2016 · coupe
Porsche Cayman 981 wheel fitment
The 981 Cayman came on staggered 18-inch wheels, with 19s on the Cayman S, 20-inch options across the range and a dedicated 20-inch set for the GT4. Road owners often fit 19 or 20-inch aftermarket wheels at slightly lower offsets than stock, while some track owners go back to 18s, including earlier 987 wheels.
5x130 bolt pattern · 71.6 mm centre bore · Stock wheels: 18 × 8, 18 × 9, 19 × 8, 19 × 9.5, 20 × 8, 20 × 9.5, 20 × 8.5, 20 × 10, 20 × 11 inch · Stock tyres: 235/45 R18, 265/45 R18, 235/40 R19, 265/40 R19, 235/35 R20, 265/35 R20, 245/35 R20, 295/30 R20
Updated 2026-10-31 · 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 |
|---|---|---|---|
| Cayman, 18-inch | Front | 18 × 8 inch, ET57 | 235/45 R18 |
| Cayman, 18-inch | Rear | 18 × 9 inch, ET47 | 265/45 R18 |
| Cayman S, 19-inch | Front | 19 × 8 inch, ET57 | 235/40 R19 |
| Cayman S, 19-inch | Rear | 19 × 9.5 inch, ET45 | 265/40 R19 |
| 20-inch option, Carrera S III / Carrera Classic II | Front | 20 × 8 inch, ET57 | 235/35 R20 |
| 20-inch option, Carrera S III / Carrera Classic II | Rear | 20 × 9.5 inch, ET45 | 265/35 R20 |
| 20-inch option, Sport Techno II / 911 Turbo Design | Front | 20 × 8.5 inch, ET57 | 235/35 R20 |
| 20-inch option, Sport Techno II / 911 Turbo Design | Rear | 20 × 10 inch, ET50 | 265/35 R20 |
| Cayman GT4, 20-inch | Front | 20 × 8.5 inch, ET61 | 245/35 R20 |
| Cayman GT4, 20-inch | Rear | 20 × 11 inch, ET50 | 295/30 R20 |
Explained in our guides
Read these before choosing wheels for the 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 comfort
- Front
- 19 × 8 inch, ET47 · 235/40 R19
- Rear
- 19 × 9.5 inch, ET35 · 265/40 R19
LFI shows this CSF6 size on a customer's 2015 981 and recommends it, with the Cayman S tyre sizes, for more sidewall than the 20s.
987 Cayman S 18s for track
- Front
- 18 × 8 inch, ET57 · 235/40 R18
- Rear
- 18 × 9 inch, ET43 · 265/40 R18
A 2016 Cayman S owner on Rennlist uses 18-inch 987.2 wheels for track days without problems, on the shorter 987 tyre sizes. The front matches the 981's own 18-inch wheel and the rear sits about 4 mm further out.
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
- The 981 18-inch rear is 9J ET47, where the 987 Cayman S 18-inch rear is 9J ET43. Earlier wheels fit, but check offsets before mixing sets.
- Porsche approves 5 mm spacers on each wheel only with the factory 18-inch combination. On Rennlist, one owner runs 5 mm spacers on factory 20s and says they stay inside the arches, and a 15 mm spacer on a 10J ET50 rear brings it right to the arch line.
- Aftermarket 19s at 8.5J ET52 front and 9.5J ET43 rear were reported on Rennlist as sitting outside the arches, so keep close to the offsets shown above.
- The GT4 has its own 20-inch wheels with an ET61 front and an 11J rear. They are five-bolt wheels tightened to the same 160 Nm as other 981s.
- Porsche specifies 160 Nm for 981 wheel bolts. Match the bolt seat and length to the wheel maker's instructions.
- 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 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 Cayman, 18-inch front size. Choose your own trim or axle in the calculator if it differs.
Questions
What is the 981 Cayman bolt pattern?
5x130 with a 71.6 mm centre bore and M14x1.5 bolts tightened to 160 Nm. The GT4 uses the same five-bolt fitting.
What wheels and tyres does a base 981 Cayman have?
8x18 ET57 front and 9x18 ET47 rear, on 235/45 R18 and 265/45 R18 tyres. The Cayman S has 8x19 ET57 and 9.5x19 ET45 on 235/40 R19 and 265/40 R19.
Can I fit 987 Cayman wheels to a 981?
Yes, in the common sizes. The 987 Cayman S 18-inch front matches the 981 front, and its 9J ET43 rear sits about 4 mm further out than the 981's 9J ET47. Owners use them on track with the 987 tyre sizes.
Are wheel spacers approved on a 981?
Porsche approves 5 mm spacers front and rear only with the factory 18-inch wheels. Larger spacers on other sizes are an owner choice and need clearance checks.
What size tyres does the Porsche Cayman 981 have?
Factory tyre (tire) sizes for the 2013–2016 Porsche Cayman 981 are 235/45 R18, 265/45 R18, 235/40 R19, 265/40 R19, 235/35 R20, 265/35 R20, 245/35 R20 and 295/30 R20, depending on trim, with wider rears on staggered setups. Your tyre placard shows the size for your car.
What wheel size does the Porsche Cayman 981 use?
Factory wheels are 18 × 8 inch, 18 × 9 inch, 19 × 8 inch, 19 × 9.5 inch, 20 × 8 inch, 20 × 9.5 inch, 20 × 8.5 inch, 20 × 10 inch and 20 × 11 inch, depending on trim. The stock table lists the offset for each.
What is the Porsche Cayman 981 centre bore?
71.6 mm. Aftermarket wheels with a larger bore need hub-centric rings sized to it.
What is the Porsche Cayman 981 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 bulletin 42/21: approved tyres, wheels and spacers, Boxster and Cayman 981
- Porsche bulletin 41/21: approved wheels and tyres, Cayman GT4 981
- Porsche: 2014 Cayman and Cayman S technical specifications
- TireWheelGuide: 2015 Cayman bolt pattern, bore and thread
- Wheel-Sizes: Cayman wheel bolt thread and torque by year
- LFI: Cayman and Boxster 987, 981 and 718 fitment guide
- Rennlist: 987 wheels on a 981 Cayman S
- Rennlist: 981 wheel offsets and spacers
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.