Spec Sizes

2015 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 pattern5x120
  • Center bore72.6 mm
  • Thread sizeM14 x 1.25
  • FastenerLug bolts

Open wheel fitment calculator → · Tire sizes →

M3

PositionRimOffsetBackspacingTireBore
Rear9x18ET295.64"255/40R1872.6 mm
Rear8.5x18ET275.31"255/40R1872.6 mm
Rear8.5x19ET275.31"255/35R1972.6 mm
Rear9x19ET295.64"255/35R1972.6 mm
Rear9x20ET295.64"265/30R2072.6 mm
Rear9x18ET295.64"255/40R1872.6 mm
Rear8.5x18ET275.31"255/40R1872.6 mm
Rear8.5x19ET275.31"255/35R1972.6 mm
Rear9x19ET295.64"255/35R1972.6 mm
Rear9x20ET295.64"265/30R2072.6 mm

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

M3 (CBA-3C30)

PositionRimOffsetBackspacingTireBore
Rear9x18ET295.64"255/40R1872.6 mm
Rear8.5x18ET275.31"255/40R1872.6 mm
Rear8.5x19ET275.31"255/35R1972.6 mm
Rear9x19ET295.64"255/35R1972.6 mm
Rear9x20ET295.64"265/30R2072.6 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