1981 Pontiac Bonneville tire and wheel sizes, bolt pattern and tire pressure

Bolt patterns 5x127 or 5x120.65, depending on the market version.

Tires for the 1981 Pontiac Bonneville

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

TireWheelGuide may earn a commission from purchases made through these links.

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

1977–1981 2 trims

Bonneville Big-block N/A · V8 205/75R15 2 fitments

Check price on Amazon · 205/75R15 Wheels 15x6 ET0 · 5x127 · 78.3 mm on Amazon

Tire size	Rim size and bolt pattern	Pressure, psi
205/75R15	Rim 15x6 ET0 5x127	–
225/70R15	Rim 15x7 ET0 5x127	–

Bonneville Small-block N/A · V8 205/75R15 2 fitments

Check price on Amazon · 205/75R15 Wheels 15x6 ET0 · 5x120.65 · 70.3 mm on Amazon

Tire size	Rim size and bolt pattern	Pressure, psi
205/75R15	Rim 15x6 ET0 5x120.65	–
225/70R15	Rim 15x7 ET0 5x120.65	–

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.