1992 Buick Roadmaster tire and wheel sizes, bolt pattern and tire pressure

Bolt pattern 5x127 on every 1992 trim.

Tires for the 1992 Buick Roadmaster

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
225/70R15 Best-rated optional on 1 trim

Check price on Amazon · 225/70R15
235/70R15 Best-rated optional on 1 trim

Check price on Amazon · 235/70R15

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Trims sold in 1992: 1
Generation: Roadmaster
Other years: 1991
1992
1993
1994
1995
1996
All years (1991–1996)

1 trim sold in 1992

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

Buick Roadmaster Roadmaster

1991–1996 1 trim

Roadmaster 5.7 180 hp · L05 V8 225/75R15 102S 3 fitments

Generation: Roadmaster · 1991–1996
Power: 180 hp
Engine: L05 V8, Petrol
Center bore: 78.1 mm
Bolt pattern: 5x127
Thread: M12 x 1.5

Check price on Amazon · 225/75R15 Wheels 15x7 ET8 · 5x127 · 78.1 mm on Amazon

Tire size	Rim size and bolt pattern	Pressure, psi
225/75R15 102S	Rim 15x7 ET8 ~~5x127~~	30 psi
235/70R15 102S	Rim 15x7 ET8 ~~5x127~~	30 psi
225/70R15	Rim 15x7 ET8 ~~5x127~~	30 psi

How to read 102S: 102 is the load index (up to 1,874 lb / 850 kg per tire) and S the speed rating (up to 112 mph / 180 km/h). ET8 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.