1971 Oldsmobile 98 tire and wheel sizes, bolt pattern and tire pressure

Bolt pattern 5x127 on every 1971 trim.

Tires for the 1971 Oldsmobile 98

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.

1971–1976 1 trim

98 7.5 321 hp · V8 8.70x B15 1 fitment

Check price on Amazon · 8.70xR15

Tire size	Rim size and bolt pattern	Pressure, psi
8.70x B15	Rim ~~5x127~~	–

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.