2023 Buick Electra E4 GS tire and wheel sizes, bolt pattern and tire pressure

Bolt pattern 6x120 on every 2023 trim.

Tires for the 2023 Buick Electra E4 GS

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

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Open a trim for its tire and rim sizes, bolt pattern and tire pressure.

2023–2025 China 1 trim

Electra E4 GS EV (SUV) 241 hp · Electric · Electric 245/50R20 3 fitments

Check price on Amazon · 245/50R20 Wheels 20x8.5 ET55 · 6x120 · 66.9 mm on Amazon

Fit	Tire size	Rim size and bolt pattern	Pressure, psi
OE	245/50R20	Rim 20x8.5 ET55 6x120	42 psi
Alt	245/55R19	Rim 19x8.5 ET55 6x120	39 psi
Alt	275/40R21	Rim 21x9 ET57 6x120	45 psi

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.
Thread size: Lug bolt or nut thread — needed when buying aftermarket fasteners.