1990 GMC Sierra 1500 tire and wheel sizes, bolt pattern and tire pressure

Bolt patterns 5x127 or 6x139.7, depending on the market version.

Tires for the 1990 GMC Sierra 1500

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

225/75R15 Best-rated standard on 1 trim

Check price on Amazon · 225/75R15
255/70R16 Best-rated standard on 1 trim

Check price on Amazon · 255/70R16
235/75R15 Best-rated optional on 1 trim

Check price on Amazon · 235/75R15

Also listed: 235/70R16 255/65R16 255/60R17 255/65R17 255/55R18 255/60R18 275/55R18 285/45R20

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Trims sold in 1990: 2
Generation: GMT400
Other years: 1988
1989
1990
1991
1992
1993
1994
1995
All years (1988–2026)

2 trims sold in 1990

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

GMC Sierra 1500 GMT400

1988–1998 2 trims

Sierra 1500 2WD N/A · V6 225/75R15 111S 6 fitments

Generation: GMT400 · 1988–1998
Power: N/A
Engine: V6, Petrol
Center bore: 78.3 mm
Bolt pattern: 5x127
Thread: M14 x 1.5

Check price on Amazon · 225/75R15 Wheels 15x6.5 ET43 · 5x127 · 78.3 mm on Amazon

Tire size	Rim size and bolt pattern	Pressure, psi
225/75R15 111S	Rim 15x6.5 ET43 5x127	35 psi
235/75R15 111S	Rim 15x7 ET38 5x127	32 psi
235/70R16 111S	Rim 16x7 ET38 5x127	32 psi
255/65R16 110T	Rim 16x7.5 ET35 5x127	30 psi
255/60R17 110T	Rim 17x7.5 ET35 5x127	30 psi
255/55R18 108H	Rim 18x8 ET30 5x127	29 psi

How to read 111S: 111 is the load index (up to 2,403 lb / 1,090 kg per tire) and S the speed rating (up to 112 mph / 180 km/h). ET43 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres. Compare offsets in the wheel offset calculator.

Sierra 1500 4WD N/A · V6 255/70R16 111S 5 fitments

Generation: GMT400 · 1988–1998
Power: N/A
Engine: V6, Petrol
Center bore: 78.3 mm
Bolt pattern: 6x139.7
Thread: M14 x 1.5

Check price on Amazon · 255/70R16 Wheels 16x7 ET31 · 6x139.7 · 78.3 mm on Amazon

Tire size	Rim size and bolt pattern	Pressure, psi
255/70R16 111S	Rim 16x7 ET31 6x139.7	35 psi
255/65R17 110T	Rim 17x7.5 ET25 6x139.7	35 psi
255/60R18 110T	Rim 18x7.5 ET25 6x139.7	35 psi
275/55R18 108H	Rim 18x8.5 ET25 6x139.7	36 psi
285/45R20 106V	Rim 20x9 ET20 6x139.7	38 psi

How to read 111S: 111 is the load index (up to 2,403 lb / 1,090 kg per tire) and S the speed rating (up to 112 mph / 180 km/h). ET31 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.