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1984 Oldsmobile Omega 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 1984 Oldsmobile Omega.

1984 Oldsmobile Omega tire sizes

Bolt pattern
Fitment tables

3 trims sold in 1984

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

Oldsmobile Omega III X-body

1980 – 1984 USA market 3 trims

Omega 2.5

98 hp · I4 195/75 SR14 1 fitment
GenerationIII X-body 1980–1984
Power98 hp
EngineI4, Petrol
Center bore70.3 mm
PCD5x120.65
ThreadM12 x 1.5
Tire sizeRim size and bolt patternPressure, psiPrices
195/75 SR1414x6 ET0 5x120.65–TiresRims

Omega 2.8

110 hp · LE2 V6 195/75 SR14 1 fitment
GenerationIII X-body 1980–1984
Power110 hp
EngineLE2 V6, Petrol
Center bore70.3 mm
PCD5x120.65
ThreadM12 x 1.5
Tire sizeRim size and bolt patternPressure, psiPrices
195/75 SR1414x6 ET0 5x120.65–TiresRims

Omega 2.8 SX

135 hp · LH7 V6 195/75 SR14 1 fitment
GenerationIII X-body 1980–1984
Power135 hp
EngineLH7 V6, Petrol
Center bore70.3 mm
PCD5x120.65
ThreadM12 x 1.5
Tire sizeRim size and bolt patternPressure, psiPrices
195/75 SR1414x6 ET0 5x120.65–TiresRims
Reading the table

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.
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.

Considering a different size?

Run your OE size against the one you want to see diameter change, ground clearance and speedometer error.