1991 GEO Storm GCI 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 1991 GEO Storm GCI.

1991 GEO Storm GCI tire sizes

Bolt pattern

Other years

Fitment tables

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

1990 – 1993 USA market 1 trim

130 hp · I4 205/50 R15 84H 4 fitments

GenerationGM R 1990–1993

Power130 hp

EngineI4, Petrol

Center bore56.1 mm

PCD4x100

ThreadM12 x 1.5

Tire size	Rim size and bolt pattern	Pressure, psi	Prices
205/50 R15 84H	15x6.5 ET45 ~~4x100~~	30	Tires Rims
205/45 R16 85V	16x7 ET42 ~~4x100~~	33	Tires Rims
215/40 R16 85V	16x7 ET40 ~~4x100~~	33	Tires Rims
225/35 ZR17 83W	17x7.5 ET38 ~~4x100~~	36	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.