Skip to content
tirewheelguide.com

2018 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 2018 Buick Regal.

2018 Buick Regal tire sizes

235/45R18245/45R18225/55R17245/40R19245/35R20205/65R16215/55R17
Bolt pattern
Other years
20142015201620172018201920202021 All 1987–2026
Fitment tables

4 trims sold in 2018

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

Buick Regal VI

2017 – 2020 4 trims

Regal 1.5T

168 hp · 1.5L LFV I4 205/65 R16 99H 4 fitments
GenerationVI 2017–2020
MarketChina
Power168 hp
Engine1.5L LFV I4, Petrol
Center bore70.3 mm
PCD5x115
ThreadM12 x 1.5
Tire sizeRim size and bolt patternPressure, psiPrices
205/65 R16 99H16x7 ET40 5x11533TiresRims
225/55 R17 97V17x7.5 ET45 5x11533TiresRims
235/45 R18 98V18x7.5 ET41 5x11533TiresRims
245/45 R18 96W18x8.5 ET49 5x11533TiresRims

Regal 1.8i

126 hp · 1.8L LKN I4 215/55 R17 98H 4 fitments
GenerationVI 2017–2020
MarketChina
Power126 hp
Engine1.8L LKN I4, Hybrid
Center bore70.3 mm
PCD5x115
ThreadM12 x 1.5
Tire sizeRim size and bolt patternPressure, psiPrices
215/55 R17 98H17x7 ET40 5x11532TiresRims
225/55 R17 97V17x7.5 ET45 5x11532TiresRims
235/45 R18 98V18x7.5 ET41 5x11533TiresRims
245/45 R18 96W18x8 ET49 5x11533TiresRims

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 sizeRim size and bolt patternPressure, psiPrices
225/55 R17 97V17x7.5 ET45 5x11532TiresRims
245/45 R18 96W18x8.5 ET49 5x11533TiresRims
235/45 R18 98V18x7.5 ET41 5x11533TiresRims
245/40 R19 98W19x8.5 ET49 5x11533TiresRims
245/35 R20 95W20x8.5 ET45 5x11536TiresRims

Regal 2.0T

257 hp · 2.0L LTG I4 245/45 R18 96W 4 fitments
GenerationVI 2017–2020
MarketChina
Power257 hp
Engine2.0L LTG I4, Petrol
Center bore70.3 mm
PCD5x115
ThreadM12 x 1.5
Tire sizeRim size and bolt patternPressure, psiPrices
245/45 R18 96W18x8.5 ET49 5x11533TiresRims
235/45 R18 98V18x7.5 ET41 5x11533TiresRims
245/40 R19 98W19x8.5 ET49 5x11533TiresRims
245/35 R20 95W20x8.5 ET45 5x11536TiresRims
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.

Considering a different size?

Run your OE size against the one you want to see diameter change, ground clearance and speedometer error.

Open the size calculator
Recent articles

Guides worth reading first

All articles
Basics

How to read a tire sidewall

Reading a tire sidewall is easy. Find out what the size, load index, speed rating and date code mean.

Continue reading
Guide

Everything you need to know about tire tread depth

Tire tread depth is an important factor in keeping your vehicle safe — how to measure it and when to replace.

Continue reading
Gear

Best supercapacitor jump starter review

We tested seven supercapacitor jump starters to find the ones worth buying.

Continue reading