2017 Buick Regal GS tire and wheel sizes, bolt pattern and tire pressure

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

Tires for the 2017 Buick Regal GS

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

245/40R19 Best-rated standard on 1 trim · optional on 1 · China, USA

Check price on Amazon · 245/40R19
245/45R18 Best-rated standard on 1 trim · China

Check price on Amazon · 245/45R18
245/35R20 Best-rated optional on 1 trim · China

Check price on Amazon · 245/35R20

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Trims sold in 2017: 2
Generations: II I sold in 2 market versions
Other years: 2013
2014
2015
2016
2017
2018
2019
2020
All years (2012–2023)

2 trims sold in 2017

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.

Buick Regal GS II

2017–2023 China 1 trim

Regal GS 2.0T 257 hp · 2.0L LTG I4 245/45R18 96W 3 fitments

Generation: II · 2017–2023
Market: China
Power: 257 hp
Engine: 2.0L LTG I4, Petrol
Center bore: 70.3 mm
Bolt pattern: 5x115
Thread: M12 x 1.5

Check price on Amazon · 245/45R18 Wheels 18x8 ET49 · 5x115 · 70.3 mm on Amazon

Tire size	Rim size and bolt pattern	Pressure, psi
245/45R18 96W	Rim 18x8 ET49 ~~5x115~~	35 psi
245/40R19 98W	Rim 19x8.5 ET49 ~~5x115~~	33 psi
245/35R20 95W	Rim 20x8.5 ET45 ~~5x115~~	36 psi

How to read 96W: 96 is the load index (up to 1,565 lb / 710 kg per tire) and W the speed rating (up to 168 mph / 270 km/h). ET49 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres.

Buick Regal GS I

2014–2017 USA 1 trim

Regal GS 2.0T 259 hp · 2.0L I4 245/40R19 94W 2 fitments

Generation: Facelift · 2014–2017
Market: USA
Power: 259 hp
Engine: 2.0L I4, Petrol
Center bore: 66.9 mm
Bolt pattern: 5x120
Thread: M14 x 1.5

Check price on Amazon · 245/40R19 Wheels 19x8.5 ET45 · 5x120 · 66.9 mm on Amazon

Tire size	Rim size and bolt pattern	Pressure, psi
245/40R19 94W	Rim 19x8.5 ET45 ~~5x120~~	35 psi
255/35R20 97Y	Rim 20x8.5 ET41 ~~5x120~~	38 psi

How to read 94W: 94 is the load index (up to 1,477 lb / 670 kg per tire) and W the speed rating (up to 168 mph / 270 km/h). ET45 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres.

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.