What size are the brake rotors on a 2023 Porsche 911 GT3 RS?

front 408 mm × 36 mm, ventilated × 36 mm, 6-piston aluminum monobloc fixed, 32 mm pistons caliper; rear 380 mm, ventilated, 4-piston fixed caliper; PCCB: 410 mm front / 390 mm rear — Porsche Newsroom — '992 911 GT3 RS Press Kit' (PDF), Chassis section. Minimum wheel diameter to clear: 20 inches.

IN SHORT

2023 Porsche 911 GT3 RS on its factory wheels

01Sourced rows

Front rotor: 408 mm × 36 mm, ventilated — Porsche Newsroom — '992 911 GT3 RS Press Kit' (PDF), Chassis section
“brake discs with a diameter of 408 millimeters are used on the front axle … the thickness of the discs has been increased from 34 to 36 millimeters”

Front rotor thickness: 36 mm — Porsche Newsroom — '992 911 GT3 RS Press Kit' (PDF), Chassis section

Front caliper: 6-piston aluminum monobloc fixed, 32 mm pistons — Porsche Newsroom — '992 911 GT3 RS Press Kit' (PDF), Chassis section
“Aluminum monobloc fixed-caliper brakes with six pistons each … piston diameters have been increased from 30 to 32 mm”

Rear rotor: 380 mm, ventilated — Porsche Newsroom — '992 911 GT3 RS Press Kit' (PDF), Chassis section
“The rear axle continues to be fitted with 380-mm brake discs and four-piston fixed-caliper brakes.”

Rear caliper: 4-piston fixed — Porsche Newsroom — '992 911 GT3 RS Press Kit' (PDF), Chassis section

Optional brake: PCCB: 410 mm front / 390 mm rear — Porsche Newsroom — '992 911 GT3 RS Press Kit' (PDF), Chassis section
“The optionally available Porsche Ceramic Composite Brake (PCCB) has 410-mm discs on the front axle and 390-mm discs on the rear axle.”

→Verified for this car

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.

?More on the 2023 Porsche 911 GT3 RS

See it on your screen — open the app →