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2023 PORSCHE 911 GT3 RS · 992 · VERIFIED ON SEP 4, 2026

Will 335s fit a 2023 Porsche 911 GT3 RS?

335/30R21 is the widest size in this vehicle's data: 734 mm rolling diameter, +4.8 % versus the 275/35R20 factory tire, outside the 3 % limit. Tires are the real decision on this car.

IN SHORT

335/30R21 is the widest size in this vehicle's data: 734 mm rolling diameter, +4.8 % versus the 275/35R20 factory tire, outside the 3 % limit.

2023 Porsche 911 GT3 RS on its factory wheels

01What the data says

Offset range on this chassis: ET25 to ET55; width 9.5–13 inches.

Tire Rack stocks exactly two wheels for this car: OZ Racing Atelier Forged Ultimate Alu Centerlock in Black or White Gold, 20x10 ET45 / 21x13 ET31, 20.8 / 24.6 lb, $9,442.82 the set, special order.

Elsewhere in the center-lock world: BBS FI-R CL, OZ Superforgiata CL, APEX VS-5RE (2,100 lb load rating), Forgeline, HRE — all 20/21 in the factory sizes. Not sold by Tire Rack today.

Tires are the real decision on this car. Porsche N-spec: Michelin Pilot Sport Cup 2 N0 (factory), Cup 2 R N0, Pirelli P Zero Corsa PZC4 N0, P Zero Trofeo RS N0, Goodyear Eagle F1 SuperSport R N0 / RS N1, Michelin Pilot Sport S 5 N0 for street. All at Tire Rack in 275/35ZR20 & 335/30ZR21.

02Tires in 335/30R21

→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 →

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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