2018 Buick Regal GS tire and wheel sizes, bolt pattern and tire pressure

Check the tables below for every tire size, wheel size, bolt pattern (PCD), rim offset and tire pressure fitted to the 2018 Buick Regal GS.

2018 Buick Regal GS tire sizes

Bolt pattern

Other years

Fitment tables

Open a trim for its factory package and every alternative size, front and rear.

2017 – 2023 2 trims

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

GenerationII 2017–2023

MarketChina

Power257 hp

Engine2.0L LTG I4, Petrol

Center bore70.3 mm

PCD5x115

ThreadM12 x 1.5

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

310 hp · 3.6L LGX V6 245/40 R19 98W 3 fitments

GenerationII 2017–2023

MarketUSA

Power310 hp

Engine3.6L LGX V6, Petrol

Center bore70.3 mm

PCD5x115

ThreadM12 x 1.5

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

Reading the table

OE fitment: The package fitted at the factory for that trim.
Alternative: A size the car accepts without modification — plus-sizing, winter setups or optional wheels.
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.
Staggered: A wider tire on the rear axle than the front. Front-to-back rotation is not possible.
Thread size: Lug bolt or nut thread — needed when buying aftermarket fasteners.