1973 Oldsmobile 98 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 1973 Oldsmobile 98.

1973 Oldsmobile 98 tire sizes

Bolt pattern

Other years

Fitment tables

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

1971 – 1976 USA market 1 trim

321 hp · V8 8.70x B15 1 fitment

GenerationIX C-body 1971–1976

Power321 hp

EngineV8, Petrol

Center bore78.3 mm

PCD5x127

Thread1/2" - 20 UNF

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

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.