2023 PORSCHE 911 GT3 RS · 992 · VERIFIED ON SEP 4, 2026
What tire sizes fit a 2023 Porsche 911 GT3 RS?
Factory size is 275/35R20 front and 335/30R21 rear (701 mm rolling diameter). 0 alternates stay within 3 % of that diameter: . Anything beyond 3 % changes the speedometer reading and the gearing.
IN SHORT
Factory size is 275/35R20 front and 335/30R21 rear (701 mm rolling diameter).
01Sizes and rolling diameter
| SIZE | DIAMETER | VS OE | VERDICT |
|---|---|---|---|
| 275/35R20 | 701 mm (27.6") | 0 % | within 3 % |
| 335/30R21 | 734 mm (28.9") | +4.8 % | over 3 % — speedo error |
02Tires sold in these sizes
- MICHELIN PILOT SPORT CUP 2 (240) — 275/35ZR20 & 335/30ZR21 · Extreme Performance Summer · $2,008 the set
- VITOUR TEMPESTA P1 P-01R — 275/35ZR20 & 335/30ZR21 · Extreme Performance Summer · $2,460 the set
- MICHELIN PILOT SPORT S 5 — 275/35ZR20 & 335/30ZR21 · Max Performance Summer · $1,896 the set · OE size · N0
- MICHELIN PILOT SPORT CUP 2 (240) — 275/35ZR20 & 335/30ZR21 · Extreme Performance Summer · $2,548 the set · OE size · N0
- NANKANG SPORTNEX CR-S (V2) — 275/35ZR20 & 335/30ZR21 · Extreme Performance Summer · $2,316 the set
- PIRELLI P ZERO WINTER 2 — 275/35ZR20 & 335/30ZR21 · Performance Winter · $3,422 the set
- PIRELLI P ZERO CORSA (PZC4) — 275/35ZR20 & 335/30ZR21 · Streetable Track & Competition · $3,171 the set · OE size · N0
- GOODYEAR EAGLE F1 SUPERSPORT R — 275/35ZR20 & 335/30ZR21 · Streetable Track & Competition · $1,824 the set · OE size · N0
- GOODYEAR EAGLE F1 SUPERSPORT RS — 275/35ZR20 & 335/30ZR21 · Streetable Track & Competition · $2,308 the set · N1
- MICHELIN PILOT SPORT CUP 2 R — 275/35ZR20 & 335/30ZR21 · Streetable Track & Competition · $2,656 the set · OE size · N0
- PIRELLI P ZERO TROFEO RS — 275/35ZR20 & 335/30ZR21 · Streetable Track & Competition · $3,359 the set · OE size · N0
→Verified for this car
MICHELIN
PILOT SPORT CUP 2 (240)
275/35ZR20 & 335/30ZR21 · Extreme Performance Summer
$2,008 / set, list price Sep 4, 2026
Check fit & buy →VITOUR
TEMPESTA P1 P-01R
275/35ZR20 & 335/30ZR21 · Extreme Performance Summer
$2,460 / set, list price Sep 4, 2026
Check fit & buy →MICHELIN
PILOT SPORT S 5
275/35ZR20 & 335/30ZR21 · Max Performance Summer
$1,896 / set, list price Sep 4, 2026
Check fit & buy →MICHELIN
PILOT SPORT CUP 2 (240)
275/35ZR20 & 335/30ZR21 · Extreme Performance Summer
$2,548 / set, list price Sep 4, 2026
Check fit & buy →Fitment is computed from published vehicle data and the retailer's listed sizes (catalog 2026-09-04-tirerack-d, verified on Sep 4, 2026). Prices are list prices on that date. Verify with your installer before you buy. Buy links may be affiliate links.
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