2025 Buick GL8 PHEV 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 2025 Buick GL8 PHEV.

2025 Buick GL8 PHEV tire sizes

225/55R18 245/45R19

Bolt pattern

Other years

Fitment tables

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

2024 – 2027 1 trim

392 hp · 1.5 L Hybrid 1.5 L 225/55 R18 2 fitments

GenerationGL8 PHEV 2024–2027

MarketChina

Power392 hp

Engine1.5 L Hybrid 1.5 L, Hybrid

Center bore66.9 mm

PCD6x120

ThreadM14 x 1.5

Fit	Tire size	Rim size and bolt pattern	Pressure, psi	Prices
OE	225/55 R18	18x7 ~~6x120~~	–	Tires Rims
Alt	245/45 R19	19x8 ~~6x120~~	–	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.