tirewheelguide

1991 Buick Roadmaster tire and wheel sizes, bolt pattern and tire pressure

Bolt pattern 5x127 on every 1991 trim.

Tires for the 1991 Buick Roadmaster

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

  1. 225/75R15 Best-rated standard on 1 trim
    Check price on Amazon · 225/75R15
  2. 225/70R15 Best-rated optional on 1 trim
    Check price on Amazon · 225/70R15
  3. 235/70R15 Best-rated optional on 1 trim
    Check price on Amazon · 235/70R15

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Trims sold in 1991
1
Generation
Roadmaster

1 trim sold in 1991

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

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 1991
1
Generation
Roadmaster
Other years
All years (1991–1996)

Considering a different size?

Compare your current tire size with the one you want: diameter change, ground clearance and speedometer error.

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