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1989 GEO Spectrum tire and wheel sizes, bolt pattern and tire pressure

Bolt pattern 4x100 on every 1989 trim.

Tires for the 1989 GEO Spectrum

Sizes most trims come with first. Open your trim below for its exact size.

  1. 185/60R14 Best-rated standard on 2 trims
    Check price on Amazon · 185/60R14
  2. 175/70R13 Best-rated standard on 1 trim
    Check price on Amazon · 175/70R13
  3. 185/55R15 Best-rated optional on 2 trims
    Check price on Amazon · 185/55R15

Also listed: 195/50R15 195/45R16 175/65R14 195/55R14 175/55R15

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Trims sold in 1989
3
Generation
JT150

3 trims sold in 1989

Open a trim for its tire and rim sizes, bolt pattern and tire pressure.

GEO Spectrum JT150

1985–1990 3 trims
Spectrum 1.5i 70 hp · I4 175/70R13 82T 4 fitments
Generation
JT150 · 1985–1990
Power
70 hp
Engine
I4, Petrol
Center bore
56.1 mm
Bolt pattern
4x100
Thread
M12 x 1.5
Check price on Amazon · 175/70R13 Wheels 13x5 ET39 · 4x100 · 56.1 mm on Amazon
Tire sizeRim size and bolt patternPressure, psi
175/70R13 82TRim 13x5 ET39 4x10029 psi
175/65R14 82TRim 14x5 ET41 4x10029 psi
175/55R15 80HRim 15x6 ET45 4x10030 psi
185/55R15 81HRim 15x6 ET43 4x10030 psi

How to read 82T: 82 is the load index (up to 1,047 lb / 475 kg per tire) and T the speed rating (up to 118 mph / 190 km/h). ET39 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres.

Spectrum 1.5i Turbo 110 hp · I4 185/60R14 82H 4 fitments
Generation
JT150 · 1985–1990
Power
110 hp
Engine
I4, Petrol
Center bore
56.1 mm
Bolt pattern
4x100
Thread
M12 x 1.5
Check price on Amazon · 185/60R14 Wheels 14x5.5 ET42 · 4x100 · 56.1 mm on Amazon
Tire sizeRim size and bolt patternPressure, psi
185/60R14 82HRim 14x5.5 ET42 4x10030 psi
185/55R15 81VRim 15x6 ET43 4x10030 psi
195/50R15 82HRim 15x6 ET45 4x10030 psi
195/45R16 82HRim 16x6.5 ET42 4x10033 psi

How to read 82H: 82 is the load index (up to 1,047 lb / 475 kg per tire) and H the speed rating (up to 130 mph / 210 km/h). ET42 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres.

Spectrum 1.6i 95 hp · I4 185/60R14 82H 4 fitments
Generation
JT150 · 1985–1990
Power
95 hp
Engine
I4, Petrol
Center bore
56.1 mm
Bolt pattern
4x100
Thread
M12 x 1.5
Check price on Amazon · 185/60R14 Wheels 14x5.5 ET42 · 4x100 · 56.1 mm on Amazon
Tire sizeRim size and bolt patternPressure, psi
185/60R14 82HRim 14x5.5 ET42 4x10030 psi
195/55R14 82HRim 14x6 ET45 4x10030 psi
195/50R15 82HRim 15x6 ET45 4x10030 psi
195/45R16 82HRim 16x6.5 ET42 4x10030 psi

How to read 82H: 82 is the load index (up to 1,047 lb / 475 kg per tire) and H the speed rating (up to 130 mph / 210 km/h). ET42 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres.

What these columns mean
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.
Thread size
Lug bolt or nut thread — needed when buying aftermarket fasteners.
Trims sold in 1989
3
Generation
JT150
Other years
All years (1985–1990)

Considering a different size?

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