1978 Pontiac Lemans 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 1978 Pontiac Lemans.

1978 Pontiac Lemans tire sizes

Bolt pattern

Other years

Fitment tables

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

1978 – 1981 USA market 1 trim

N/A · V6 195x SR14 4 fitments

GenerationA-body IV 1978–1981

PowerN/A

EngineV6, Petrol

Center bore70.3 mm

PCD5x120.65

Thread7/16" - 20 UNF

Tire size	Rim size and bolt pattern	Pressure, psi	Prices
195x SR14	14x5 ET8 ~~5x120.65~~	–	Tires Rims
205/75 SR14	14x6 ET8 ~~5x120.65~~	–	Tires Rims
225/60 SR15	15x7 ET12 ~~5x120.65~~	–	Tires Rims
235/60 HR15	15x7 ET0 ~~5x120.65~~	–	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.