2020 Buick Regal 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 2020 Buick Regal.

2020 Buick Regal tire sizes

235/45R18 245/45R18 245/40R19 225/55R17 245/35R20

Bolt pattern

5x115

2 generations were sold in 2020. Check your chassis code before ordering wheels.

Other years

2016 2017 2018 2019 2020 2021 2022 2023 All 1987–2026

Fitment tables

3 trims sold in 2020

Open a trim for its factory package and every alternative size, front and rear. More than one generation was on sale this year — check the chassis code against your VIN before ordering.

Buick Regal VI Facelift

2020 – 2023 2 trims

Regal 1.5T

166 hp · 1.5L LFV I4 225/55 R17 97V 4 fitments

GenerationVI Facelift 2020–2023

MarketChina

Power166 hp

Engine1.5L LFV I4, Petrol

Center bore70.3 mm

PCD5x115

ThreadM12 x 1.5

Tire size	Rim size and bolt pattern	Pressure, psi	Prices
225/55 R17 97V	17x7.5 ET45 ~~5x115~~	32	Tires Rims
235/45 R18 98V	18x7.5 ET41 ~~5x115~~	33	Tires Rims
245/45 R18 96W	18x8.5 ET49 ~~5x115~~	33	Tires Rims
245/40 R19 98W	19x8.5 ET49 ~~5x115~~	33	Tires Rims

Regal 2.0T

233 hp · 2.0L LSY I4 245/45 R18 96W 4 fitments

GenerationVI Facelift 2020–2023

MarketChina

Power233 hp

Engine2.0L LSY 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	18x8.5 ET49 ~~5x115~~	33	Tires Rims
235/45 R18 98V	18x7.5 ET41 ~~5x115~~	33	Tires Rims
245/40 R19 98W	19x8.5 ET49 ~~5x115~~	33	Tires Rims
245/35 R20 95W	20x8.5 ET49 ~~5x115~~	36	Tires Rims

Buick Regal VI

2017 – 2020 1 trim

Regal 2.0T

250 hp · 2.0L LTG I4 225/55 R17 97V 5 fitments

GenerationVI 2017–2020

MarketUSA

Power250 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
225/55 R17 97V	17x7.5 ET45 ~~5x115~~	32	Tires Rims
245/45 R18 96W	18x8.5 ET49 ~~5x115~~	33	Tires Rims
235/45 R18 98V	18x7.5 ET41 ~~5x115~~	33	Tires Rims
245/40 R19 98W	19x8.5 ET49 ~~5x115~~	33	Tires Rims
245/35 R20 95W	20x8.5 ET45 ~~5x115~~	36	Tires Rims

Reading the table

What these columns mean

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.