1991 Pontiac Grand Prix Tire Sizes
Factory original equipment (OE) tire specifications.
GT
Tire Size
P215/60R15
Load Index
Speed Rating
GT w/GTP Pkg.
Tire Size
P225/60R16
Load Index
Speed Rating
LE
Tire Size
P205/70R15
Load Index
Speed Rating
SE
Tire Size
P205/70R15
Load Index
Speed Rating
SE
Tire Size
P215/60R16
Load Index
Speed Rating
STE
Tire Size
P215/60R16
Load Index
Speed Rating