WheelOffset

2012 Buick Regal Wheel Offset

Quick specs

Wheel size
8x18 · 8.5x19 · 8.5x20 · 7x17
Offset
ET42 · ET45 · ET47 · ET41
Backspacing
Multiple — see configurations
Bolt pattern
5x120 · 5x115
Center bore
66.9 mm · 70.3 mm
Thread
M14 x 1.5
Tire size
Multiple — see configurations

OEM configurations

ConfigurationFrontRearOffsetBackspacingTireBolt patternCenter boreThread
2.0T · 2.0L, I4, Petrol8x189x18ET42 / ET305.65 in235/50R185x12066.9 mmM14 x 1.5
2.0T · 2.0L, I4, Petrol8.5x19—ET456.02 in245/40R195x12066.9 mmM14 x 1.5
2.0T · 2.0L, I4, Petrol8.5x20—ET476.10 in255/35R205x12066.9 mmM14 x 1.5
2.4i · I4, Petrol7x17—ET415.11 in235/50R175x12066.9 mmM14 x 1.5
2.4i · I4, Petrol8x189x18ET42 / ET305.65 in235/50R185x12066.9 mmM14 x 1.5
2.4i · I4, Petrol8.5x19—ET456.02 in245/40R195x12066.9 mmM14 x 1.5
2.4i · I4, Petrol8.5x20—ET476.10 in255/35R205x12066.9 mmM14 x 1.5
2.4i · I4, Petrol8x189x18ET42 / ET305.65 in245/45R185x11570.3 mmM14 x 1.5
1.6T · I4, Petrol7x17—ET425.15 in225/55R175x11570.3 mmM14 x 1.5
2.0T · I4, Petrol8x189x18ET42 / ET305.65 in245/45R185x11570.3 mmM14 x 1.5
2.0i · I4, Petrol7x17—ET425.15 in225/55R175x11570.3 mmM14 x 1.5

Lug hardware

More on Amazon

  • White Knight 1309-1S-20AM Chrome M14x1.50 Open-End Bulge Acorn Lug Nut, 20 Pack

    Catalog match for this vehicle. Confirm seat type and wheel style before buying.

    Check price on Amazon

  • White Knight 1709D-4 Chrome Duplex Bulge Lug Nut for Chevy/Dodge/Chrysler - 4 Piece

    Catalog match for this vehicle. Confirm seat type and wheel style before buying.

    Check price on Amazon

  • White Knight 3809L-20AM Chrome M14 x 1.50 Duplex Spline Lug Nut, 20 Pack

    Catalog match for this vehicle. Confirm seat type and wheel style before buying.

    Check price on Amazon

Real-World 2012 Buick Regal 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:

  • 19-inch — 1 documented build

1 documented build.

2012 Buick Regal custom wheel setup

Staggered · 19×? / Rear unknown

Documented on a 2012 Buick Regal build — observed custom fitment, not a universal fit guarantee.

Wheel: OEM Opel Insignia

Front
19×?
Rear
—
Compared with OEM

Compared with the 19×8.5 ET45 OEM configuration. Calculated geometry only — not fit confirmation.

    View full build on Modified1

    More specs for the 2012 Buick Regal

    Each OEM row is a catalog configuration. Offset ranges are not collapsed when the database has exact setups. Documented aftermarket builds are observed setups only — not universal fit or clearance confirmation.