What size are the brake rotors on a 2020 BMW M2 Competition?

front 400 mm, ventilated × 36 mm, 6-piston fixed caliper; rear 380 mm, ventilated, 4-piston fixed caliper — BMW Group PressClub Canada — 'The first ever BMW M2 Competition' (19 Apr 2018). Minimum wheel diameter to clear: 19 inches.

IN SHORT

front 400 mm, ventilated × 36 mm, 6-piston fixed caliper; rear 380 mm, ventilated, 4-piston fixed caliper — BMW Group PressClub Canada — 'The first ever BMW M2 Competition' (19 Apr 2018).

2020 BMW M2 Competition on its factory wheels

01Sourced rows

Front rotor: 400 mm, ventilated — BMW Group PressClub Canada — 'The first ever BMW M2 Competition' (19 Apr 2018)
“larger brake disks (front: 400 mm in diameter, rear: 380 mm in diameter)”

Front rotor thickness: 36 mm — Fitment fixture data/fitment-fixtures.json (F87-COMP), captured from the retailer's by-vehicle listing Sep 2 2026 and the BMW M Compound brake part spec

Front caliper: 6-piston fixed — BMW Group PressClub Canada — 'The first ever BMW M2 Competition' (19 Apr 2018)
“front: 6-piston fixed and rear: 4-piston fixed”

Rear rotor: 380 mm, ventilated — BMW Group PressClub Canada — 'The first ever BMW M2 Competition' (19 Apr 2018)

Rear caliper: 4-piston fixed — BMW Group PressClub Canada — 'The first ever BMW M2 Competition' (19 Apr 2018)

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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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