What is the recommended tire pressure for a 2021 BMW M4?

The 2021 BMW M4 uses 32 PSI cold on the front axle and 36 PSI cold on the rear axle. These are the OEM specifications. Always measure tire pressure when the tires are cold — before driving or after sitting for at least 3 hours.

What tire size does the 2021 BMW M4 use?

The standard (base trim) tire size for the 2021 BMW M4 is 275/35R20. Higher trim levels and optional packages may use a different size — check the sticker inside your driver's door for the exact specification for your vehicle.

How do I convert the 2021 BMW M4 tire pressure to bar?

32 PSI = 2.2 bar (front) and 36 PSI = 2.5 bar (rear). In kPa: 221 kPa front and 248 kPa rear. Multiply PSI × 0.0689 to convert to bar.

Why are the front and rear tire pressures different on the 2021 BMW M4?

The 2021 BMW M4 uses 32 PSI front and 36 PSI rear because the two axles carry different loads. The front axle carries roughly 49% of the vehicle's 1730 kg curb weight, requiring a slightly different pressure to maintain the correct contact patch at each corner.

What happens if the 2021 BMW M4 tires are underinflated?

Running 5+ PSI low on the BMW M4 causes uneven shoulder wear, increased rolling resistance (worse fuel economy), higher tire operating temperature, and reduced wet braking performance. In extreme cases, chronic underinflation can cause sidewall failure. Check pressure monthly and always after a large temperature swing.

2021 BMW M4 Tire Pressure

OEM cold pressure spec — verified for the 2021–2024 generation

Recommended cold pressure (PSI)

Front

2.2 bar · 221 kPa

Rear

2.5 bar · 248 kPa

Tire size

275/35R20

Curb weight

1,730 kg

Front axle load

49%

Customize for your load & driving style

Pre-filled with BMW M4 specs. Adjust weight or style below.

Recommended COLD pressure

25.1 / 26.2 PSI

Front (cold): 25.1 PSI(1.73 bar)
Rear (cold): 26.2 PSI(1.8 bar)
Front (hot est.): 27.7 PSI
Rear (hot est.): 28.8 PSI

Street setting: balanced for comfort, wear, and fuel economy. Always measure cold.

Other BMW M4 years

2024 M4 2023 M4 2022 M4 All years →

FAQ — 2021 BMW M4

What is the recommended tire pressure for a 2021 BMW M4?: The 2021 BMW M4 uses 32 PSI cold on the front axle and 36 PSI cold on the rear axle. These are the OEM specifications. Always measure tire pressure when the tires are cold — before driving or after sitting for at least 3 hours.
What tire size does the 2021 BMW M4 use?: The standard (base trim) tire size for the 2021 BMW M4 is 275/35R20. Higher trim levels and optional packages may use a different size — check the sticker inside your driver's door for the exact specification for your vehicle.
How do I convert the 2021 BMW M4 tire pressure to bar?: 32 PSI = 2.2 bar (front) and 36 PSI = 2.5 bar (rear). In kPa: 221 kPa front and 248 kPa rear. Multiply PSI × 0.0689 to convert to bar.
Why are the front and rear tire pressures different on the 2021 BMW M4?: The 2021 BMW M4 uses 32 PSI front and 36 PSI rear because the two axles carry different loads. The front axle carries roughly 49% of the vehicle's 1730 kg curb weight, requiring a slightly different pressure to maintain the correct contact patch at each corner.
What happens if the 2021 BMW M4 tires are underinflated?: Running 5+ PSI low on the BMW M4 causes uneven shoulder wear, increased rolling resistance (worse fuel economy), higher tire operating temperature, and reduced wet braking performance. In extreme cases, chronic underinflation can cause sidewall failure. Check pressure monthly and always after a large temperature swing.