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OE fitment record · Porsche
2023 Porsche 718 tire sizes
Every factory tire size the 2023 Porsche 718 shipped with, by trim: front and rear sizes, factory wheel specs, and the stagger math where it applies.
At a glance
- Model years covered: 2023 (identical factory fitments)
- Factory setup: staggered on at least one trim
- OE sizes: 235/35R20 · 265/35R20 · 245/35R20 · 295/30R20 · 235/40R19 · 265/40R19 · 235/45R18 · 265/45R18
- Generation: I (982)
- Factory power range: 296–493 hp
Shop the widest OE size (295/30R20): Tire Rack → · SimpleTire → · local install partners on the buy page.
Factory fitments by trim
| Trim | Front | Rear | Setup |
|---|---|---|---|
| 2.0 Cayman T 296 hp | 235/35R20 8Jx20 ET57 | 265/35R20 10Jx20 ET45 | Staggered +3.1% Ø |
| 2.0 Boxster T 296 hp | 235/35R20 8Jx20 ET57 | 265/35R20 10Jx20 ET45 | Staggered +3.1% Ø |
| 4.0 Spyder 414 hp | 245/35R20 8.5Jx20 ET61 | 295/30R20 11Jx20 ET50 | Staggered +0.8% Ø |
| 4.0 Cayman GT4 RS 493 hp | 245/35R20 8.5Jx20 ET61 | 295/30R20 11Jx20 ET50 | Staggered +0.8% Ø |
| 4.0 Boxster GTS 394 hp | 235/35R20 8.5Jx20 ET57 | 265/35R20 10.5Jx20 ET47 | Staggered +3.1% Ø |
| 2.5 Cayman S 345 hp | 235/40R19 8Jx19 ET57 | 265/40R19 10Jx19 ET45 | Staggered +3.6% Ø |
| 2.0 Cayman 296 hp | 235/45R18 8Jx18 ET57 | 265/45R18 9.5Jx18 ET49 | Staggered +4.0% Ø |
| 2.0 Boxster 296 hp | 235/45R18 8Jx18 ET57 | 265/45R18 9.5Jx18 ET49 | Staggered +4.0% Ø |
| 2.5 Boxster S 345 hp | 235/40R19 8Jx19 ET57 | 265/40R19 10Jx19 ET45 | Staggered +3.6% Ø |
| 4.0 Cayman GTS 394 hp | 235/35R20 8.5Jx20 ET57 | 265/35R20 10.5Jx20 ET47 | Staggered +3.1% Ø |
| 4.0 Cayman GT4 414 hp | 245/35R20 8.5Jx20 ET61 | 295/30R20 11Jx20 ET50 | Staggered +0.8% Ø |
| 4.0 Spyder RS 493 hp | 245/35R20 8.5Jx20 ET61 | 295/30R20 11Jx20 ET50 | Staggered +0.8% Ø |
Versus the 2022 Porsche 718 record: trims added: 4.0 Spyder RS.
235 = tread width in millimetres · 35 = sidewall height as a percentage of that width · R20 = radial construction on a 20-inch wheel. Two sizes with the same overall diameter are speedometer-compatible, that is the whole game in staggering.
Run these sizes in the calculator: see the live verdict for 245/35R20 front + 295/30R20 rear →, or check any other pairing in the stagger calculator.
Fitment hardware
Dialing in how a setup sits on this platform? Hub-centric wheel spacers fine-tune effective offset and caliper clearance one axle at a time, aftermarket wheels usually need lug nuts in the matching seat and thread, and aggressive fitments bring adjustable control arms into play for camber. Code KSPAF takes 5% off at KSP Performance. Start with the measurement math in the wheel spacer sizing guide.
Checking an aftermarket stagger for this car? Run the pairing through the stagger calculator. OE fitment data from Wheel-Size.com; years and packages vary by market.
Always confirm against the tire placard on your driver-side door jamb and your actual wheel widths before ordering. Fitments here cover common factory and community setups. Years and packages vary.
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Porsche 718 by era
← 2022 · All Porsche 718 years → · 2024–2025 →
Size deep-dives for every OE size above are linked in the tables; the full directory lives at /tire-sizes/ and /vehicles/.
// Sources & further reading
- Your vehicle’s tire placard (driver-side door jamb) & owner’s manual · The legally required OEM fitment record on every car, always the first authority.
- Tire and Rim Association (T&RA) standards · The US standards body whose yearbook defines size/rim pairing norms.
How we compile and verify fitment data: our methodology. Spot an error? fitment@staggeredsetup.com. Corrections ship fast.