2012 Buick Regal tire and wheel sizes, bolt pattern and tire pressure

Bolt patterns 5x115 (China) or 5x120 (USA), depending on the market version.

Tires for the 2012 Buick Regal

Sizes most trims come with first. Open your trim below for its exact size.

225/55R17 Best-rated standard on 2 trims · China

Check price on Amazon · 225/55R17
245/45R18 Best-rated standard on 2 trims · China

Check price on Amazon · 245/45R18
235/50R18 Best-rated standard on 1 trim · optional on 1 · USA

Check price on Amazon · 235/50R18

Also listed: 235/50R17 245/40R19 255/35R20

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Trims sold in 2012: 6
Generation: V sold in 2 market versions
Other years: 2008
2009
2010
2011
2012
2013
2014
2015
All years (1987–2026)

6 trims sold in 2012

Sold in 2 market versions with different tire sizes and bolt patterns. Open a trim for its tire and rim sizes, bolt pattern and tire pressure. Trims with the same tires and wheels share a row.

Buick Regal V

2009–2013 6 trims

China

4 trims

Regal 1.6T +1 variant 177 hp · I4 225/55R17 1 fitment

Same tires and wheels on: 2.0i

Generation: V · 2009–2013
Market: China
Power: 177 hp
Engine: I4, Petrol
Center bore: 70.3 mm
Bolt pattern: 5x115
Thread: M14 x 1.5

Check price on Amazon · 225/55R17 Wheels 17x7 ET42 · 5x115 · 70.3 mm on Amazon

Tire size	Rim size and bolt pattern	Pressure, psi
225/55R17	Rim 17x7 ET42 ~~5x115~~	–

Regal 2.0T +1 variant 217 hp · I4 245/45R18 1 fitment

Same tires and wheels on: 2.4i

Generation: V · 2009–2013
Market: China
Power: 217 hp
Engine: I4, Petrol
Center bore: 70.3 mm
Bolt pattern: 5x115
Thread: M14 x 1.5

Check price on Amazon · 245/45R18 Wheels 18x8 ET42 · 5x115 · 70.3 mm on Amazon

Tire size	Rim size and bolt pattern	Pressure, psi
245/45R18	Rim 18x8 ET42 ~~5x115~~	–

USA

2 trims

Regal 2.0T 220 hp · 2.0L I4 235/50R18 3 fitments

Generation: V · 2009–2013
Market: USA
Power: 220 hp
Engine: 2.0L I4, Petrol
Center bore: 66.9 mm
Bolt pattern: 5x120
Thread: M14 x 1.5

Check price on Amazon · 235/50R18 Wheels 18x8 ET42 · 5x120 · 66.9 mm on Amazon

Tire size	Rim size and bolt pattern	Pressure, psi
235/50R18	Rim 18x8 ET42 ~~5x120~~	–
245/40R19	Rim 19x8.5 ET45 ~~5x120~~	–
255/35R20	Rim 20x8.5 ET47 ~~5x120~~	–

Regal 2.4i 182 hp · I4 235/50R17 4 fitments

Generation: V · 2009–2013
Market: USA
Power: 182 hp
Engine: I4, Petrol
Center bore: 66.9 mm
Bolt pattern: 5x120
Thread: M14 x 1.5

Check price on Amazon · 235/50R17 Wheels 17x7 ET41 · 5x120 · 66.9 mm on Amazon

Tire size	Rim size and bolt pattern	Pressure, psi
235/50R17	Rim 17x7 ET41 ~~5x120~~	–
235/50R18	Rim 18x8 ET42 ~~5x120~~	–
245/40R19	Rim 19x8.5 ET45 ~~5x120~~	–
255/35R20	Rim 20x8.5 ET47 ~~5x120~~	–

What these columns mean

Rim size: Rim diameter × width in inches, and the factory offset (ET) in millimetres, e.g. 18x7.5 ET25.
Bolt pattern (PCD): Number of studs and the diameter of the circle they sit on. It must match exactly.
Center bore: Diameter of the hub hole. Larger aftermarket bores need hub-centric rings.
Pressure: Recommended cold inflation pressure for that axle, in psi.
Thread size: Lug bolt or nut thread — needed when buying aftermarket fasteners.