1956 Oldsmobile 88 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 1956 Oldsmobile 88.

1956 Oldsmobile 88 tire sizes

215/75R14 225/70R15

Bolt pattern

Other years

Fitment tables

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

1954 – 1956 USA market 2 trims

174 hp · 5.3L V8 8.50x D14 4 fitments

GenerationII B-body 1954–1956

Power174 hp

Engine5.3L V8, Petrol

Center bore78.3 mm

PCD5x127

Thread1/2" - 20 UNF

Tire size	Rim size and bolt pattern	Pressure, psi	Prices
8.50x D14	14x5.5 ET0 ~~5x127~~	–	Tires Rims
215/75 R14	14x5.5 ET0 ~~5x127~~	–	Tires Rims
7.60x D15	15x5.5 ET0 ~~5x127~~	–	Tires Rims
225/70 R15	15x6.5 ET0 ~~5x127~~	–	Tires Rims

185 hp · 5.3L V8 8.50x D14 4 fitments

GenerationII B-body 1954–1956

Power185 hp

Engine5.3L V8, Petrol

Center bore78.3 mm

PCD5x127

Thread1/2" - 20 UNF

Tire size	Rim size and bolt pattern	Pressure, psi	Prices
8.50x D14	14x5.5 ET0 ~~5x127~~	–	Tires Rims
215/75 R14	14x5.5 ET0 ~~5x127~~	–	Tires Rims
7.60x D15	15x5.5 ET0 ~~5x127~~	–	Tires Rims
225/70 R15	15x6.5 ET0 ~~5x127~~	–	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.