2020 Buick GL8 tire and wheel sizes, bolt pattern and tire pressure

Bolt pattern 5x120 on every 2020 trim.

Tires for the 2020 Buick GL8

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

225/60R17 Best-rated standard on 4 trims

Check price on Amazon · 225/60R17
225/55R18 Best-rated optional on 4 trims

Check price on Amazon · 225/55R18

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Trims sold in 2020: 4
Generations: III II
Other years: 2016
2017
2018
2019
2020
2021
2022
2023
All years (2005–2026)

4 trims sold in 2020

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 GL8 III

2017–2027 2 trims

GL8 2.0T +1 variant 233 hp · 2.0L LSY I4 225/60R17 99V 2 fitments

2 versions of this trim share these tires and wheels.

Generation: Facelift · 2020–2027
Power: 233 hp
Engine: 2.0L LSY I4, Petrol
Center bore: 66.9 mm
Bolt pattern: 5x120
Thread: M14 x 1.5

Check price on Amazon · 225/60R17 Wheels 17x7 ET41 · 5x120 · 66.9 mm on Amazon

Tire size	Rim size and bolt pattern	Pressure, psi
225/60R17 99V	Rim 17x7 ET41 ~~5x120~~	35 psi
225/55R18 98V	Rim 18x7 ET40 ~~5x120~~	35 psi

How to read 99V: 99 is the load index (up to 1,709 lb / 775 kg per tire) and V the speed rating (up to 149 mph / 240 km/h). ET41 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres.

Buick GL8 II

2017–2020 2 trims

GL8 2.0T +1 variant 256 hp · 2.0L LTG I4 225/60R17 99V 2 fitments

Same tires and wheels on: 2.5i

Generation: Facelift · 2017–2020
Power: 256 hp
Engine: 2.0L LTG I4, Petrol
Center bore: 66.9 mm
Bolt pattern: 5x120
Thread: M14 x 1.5

Check price on Amazon · 225/60R17 Wheels 17x7 ET41 · 5x120 · 66.9 mm on Amazon

Tire size	Rim size and bolt pattern	Pressure, psi
225/60R17 99V	Rim 17x7 ET41 ~~5x120~~	35 psi
225/55R18 98V	Rim 18x7 ET40 ~~5x120~~	35 psi

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.