Spec Sizes

2021 BMW M3 Wheel Size & Fitment Specs

Confirmed OEM mounting and wheel configurations for this model year. Multiple setups are listed separately — nothing is collapsed to a single arbitrary size.

  • Bolt pattern5x112
  • Center bore66.5 mm
  • Thread sizeM14 x 1.25
  • FastenerLug bolts

Open wheel fitment calculator → · Tire sizes →

M3

PositionRimOffsetBackspacingTireBore
Rear9.5x18ET04.75"275/40R1866.5 mm
Rear9x19ET205.29"275/35R1966.5 mm
Rear9.5x19ET205.54"275/35R1966.5 mm

Staggered / rear-specific sizes are listed separately from front.

M3 Competition

PositionRimOffsetBackspacingTireBore
Rear9.5x18ET04.75"275/40R1866.5 mm
Rear9x19ET205.29"275/35R1966.5 mm
Rear9.5x19ET205.54"275/35R1966.5 mm

Staggered / rear-specific sizes are listed separately from front.

M3 Competition (3BA-32AY30)

PositionRimOffsetBackspacingTireBore
Rear9.5x18ET04.75"275/40R1866.5 mm
Rear9x19ET205.29"275/35R1966.5 mm
Rear9.5x19ET205.54"275/35R1966.5 mm

Staggered / rear-specific sizes are listed separately from front.

Vehicles with potentially interchangeable wheels

Filtered by exact bolt pattern and physically compatible center bore — not a full fitment guarantee.

Hardware matching known specs

  • MCGARD Wheel Locks M14x1.25

    Thread matches catalog hardware

    M14 x 1.25 · lock

    View on Amazon

  • Rison Titanium Open End Lug Nuts (M14x1.25, Burnt Blue)

    Thread matches catalog hardware

    M14 x 1.25

    View on Amazon