1991 Buick Roadmaster tire sizes
The 1991 Buick Roadmaster came from the factory with 2 tire sizes on 15" wheels. The most common size is 235/70 R15. Pick your trim below.
1991 Roadmaster Base Model
Factory (OE) sizes
15"wheels
Optional sizes
15"wheels
1991 Roadmaster Wagon
Factory (OE) sizes
15"wheels
How to read 235/70 R15
- 235
- Tread width in millimetres
- 70
- Sidewall height, % of width
- R
- Radial construction
- 15
- Wheel diameter in inches
Overall diameter: about 28.0" · Sidewall: 165 mm