2013 BMW M3 Wheel Offset

ET20 · ET29 · ET31

Quick specs

OEM offset
ET20 · ET29 · ET31
Wheel size
8x18 · 8.5x18 · 8.5x19 · 9x19
Bolt pattern
5×120
Center bore
72.6 mm
Tire size
235/40R18 · 245/40R18 · 245/35R19 · 255/35R19

OEM configurations

ConfigurationFrontRearOffsetBackspacingTireBolt patternCenter boreThread
4.0 · 4.0L, S65B40A, V8, Petrol8x188.5x18ET20 / ET294.79 in235/40R18 / 245/40R185x12072.6 mmM12 x 1.5
4.0 · 4.0L, S65B40A, V8, Petrol8x188.5x18ET20 / ET294.79 in235/40R18 / 245/40R185x12072.6 mmM12 x 1.5
4.4 GTS · S65B44A, V8, Petrol9x199x19ET315.72 in255/35R195x12072.6 mmM12 x 1.5
4.0 (CBA-VA40) · S65B40A, V8, Petrol8x188.5x18ET20 / ET294.79 in235/40R18 / 245/40R185x12072.6 mmM12 x 1.5
4.0 (CBA-WD40) · S65B40A, V8, Petrol8x188.5x18ET20 / ET294.79 in235/40R18 / 245/40R185x12072.6 mmM12 x 1.5

See how a different wheel would sit See wheel backspacing

What happens if you change the offset?

Compare your own setup

See how a different width or offset sits versus an OEM configuration for this year.

OEM: 18×8 ET20 · 235/40R18 · Front · 4.0 · 4.0L, S65B40A, V8, Petrol

  • Outer: +0 mm
  • Inner clearance: 0 mm unchanged

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Wheels and hardware for this vehicle

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Lug hardware

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  • Bapmic 36136781150 Wheel Lug Bolt M12 X 1.5 for BMW E46 E90 E39 E60 E53 325i (Pack of 4)

    Confirmed vehicle catalog match. Confirm seat type for your wheel.

    Check price on Amazon
  • Wheel Accessories Parts Set of 20 Black 12x1.5 Lug Bolts Conical Seat with 17mm Hex, 24 mm Shank Length, Acorn Seat Lug Bolt Designed for Aftermarket Wheels (20 Bolts, Black, M12x1.5/12 1.5)

    Confirmed vehicle catalog match. Confirm seat type for your wheel.

    Check price on Amazon
  • White Knight Chrome M12x1.50 Bulge Acorn Lug Nut, 20 Count

    M12 x 1.5

    Matches M12 x 1.5 thread — confirm wheel seat style

    Check price on Amazon

Wheel locks

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  • NewYall Set of 5 Security Wheel Bolts Lock Nuts and Master Key

    Confirmed vehicle catalog match. Confirm seat style for your wheel.

    Check price on Amazon
  • MCGARD Chrome Cone Seat M12 x 1.5 Wheel Locks

    M12 x 1.5 · lock

    Matches M12 x 1.5 — confirm seat style for your wheel

    Check price on Amazon

Real-World 2013 BMW M3 Wheel Setups

Observed aftermarket setups from documented Modified1 builds. These are individual build records — not OEM specifications and not clearance guarantees for every vehicle.

Common custom wheel sizes

Among builds in our database for this model year:

  • 20-inch — 2 documented builds

2 documented builds.

2013 BMW M3 custom wheel setup

Staggered · 20×? / Rear unknown

Documented on a 2013 BMW M3 build — observed custom fitment, not a universal fit guarantee.

Wheel: TSW Mirabeau

Front
20×?
Rear
Compared with OEM

Compared with the 18×8 ET20 OEM configuration. Calculated geometry only — not fit confirmation.

  • Diameter +2" vs OEM
2013 BMW M3 custom wheel setup

Staggered · 20×? / Rear unknown

Documented on a 2013 BMW M3 build — observed custom fitment, not a universal fit guarantee.

Wheel: Vossen CVT

Front
20×?
Rear
Compared with OEM

Compared with the 18×8 ET20 OEM configuration. Calculated geometry only — not fit confirmation.

  • Diameter +2" vs OEM

More specs for the 2013 BMW M3

OEM offsets are catalog configurations, not an aftermarket “safe ET range.” Matching offset alone does not confirm clearance. Documented custom builds are observed setups only.