The 1987 Pontiac Sunbird tire size depends on trim: the Base, 4D Sedan, Automatic takes P175/80R13; the Base, 4D Sedan, Standard takes P175/80R13; the Base, 4D Wagon, Standard takes P175/80R13; the Base, 4D Wagon, Automatic takes P175/80R13; the GT, 2D Convertible, 2.0 K, Automatic takes P215/60R14; the GT, 2D Convertible, 2.0 K, Standard takes P215/60R14; the GT, 2D Convertible, 2.0 M, Standard, MG1 takes P215/60R14; the GT, 2D Convertible, 2.0 M, Automatic takes P215/60R14; the GT, 2D Convertible, 2.0 M, Standard, MG3 takes P215/60R14; the GT, 2D Coupe, 2.0 K, Automatic takes P215/60R14; the GT, 2D Hatchback, 2.0 M, Automatic takes P215/60R14; the GT, 2D Coupe, 2.0 M, Automatic takes P215/60R14; the GT, 2D Coupe, 2.0 M, Standard, MG3 takes P215/60R14; the GT, 2D Coupe, 2.0 K, Standard takes P215/60R14; the GT, 2D Hatchback, 2.0 K, Automatic takes P215/60R14; the GT, 2D Hatchback, 2.0 M, Standard, MG1 takes P215/60R14; the GT, 2D Hatchback, 2.0 K, Standard takes P215/60R14; the GT, 2D Coupe, 2.0 M, Standard, MG1 takes P215/60R14; the GT, 4D Sedan, 2.0 K, Automatic takes P215/60R14; the GT, 4D Sedan, 2.0 K, Standard takes P215/60R14; the GT, 4D Sedan, 2.0 M, Automatic takes P215/60R14; the SE, 2D Convertible, 2.0 M, Standard, MG1 takes P175/80R13; the SE, 2D Convertible, 2.0 K, Standard takes P175/80R13; the GT, 2D Hatchback, 2.0 M, Standard, MG3 takes P215/60R14; the GT, 4D Sedan, 2.0 M, Standard, MG3 takes P215/60R14; the SE, 2D Convertible, 2.0 M, Automatic takes P175/80R13; the GT, 4D Sedan, 2.0 M, Standard, MG1 takes P215/60R14; the SE, 2D Convertible, 2.0 M, Standard, MG3 takes P175/80R13; the SE, 2D Coupe, 2.0 M, Standard, MG1 takes P175/80R13; the SE, 2D Coupe, 2.0 M, Automatic takes P175/80R13; the SE, 2D Coupe, 2.0 K, Automatic takes P175/80R13; the SE, 2D Coupe, 2.0 K, Standard takes P175/80R13; the SE, 2D Hatchback, 2.0 K, Standard takes P175/80R13; the SE, 2D Coupe, 2.0 M, Standard, MG3 takes P175/80R13; the SE, 2D Hatchback, 2.0 M, Automatic takes P175/80R13; the SE, 2D Hatchback, 2.0 M, Standard, MG1 takes P175/80R13; the SE, 2D Convertible, 2.0 K, Automatic takes P175/80R13; the SE, 2D Hatchback, 2.0 M, Standard, MG3 takes P175/80R13; the SE, 2D Hatchback, 2.0 K, Automatic takes P175/80R13, per the factory service manual.
Factory-Spec Tire Size
Varies by trim
Base, 4D Sedan, Automatic: P175/80R13
Base, 4D Sedan, Standard: P175/80R13
Base, 4D Wagon, Standard: P175/80R13
Base, 4D Wagon, Automatic: P175/80R13
GT, 2D Convertible, 2.0 K, Automatic: P215/60R14
GT, 2D Convertible, 2.0 K, Standard: P215/60R14
GT, 2D Convertible, 2.0 M, Standard, MG1: P215/60R14
GT, 2D Convertible, 2.0 M, Automatic: P215/60R14
GT, 2D Convertible, 2.0 M, Standard, MG3: P215/60R14
GT, 2D Coupe, 2.0 K, Automatic: P215/60R14
GT, 2D Hatchback, 2.0 M, Automatic: P215/60R14
GT, 2D Coupe, 2.0 M, Automatic: P215/60R14
GT, 2D Coupe, 2.0 M, Standard, MG3: P215/60R14
GT, 2D Coupe, 2.0 K, Standard: P215/60R14
GT, 2D Hatchback, 2.0 K, Automatic: P215/60R14
GT, 2D Hatchback, 2.0 M, Standard, MG1: P215/60R14
GT, 2D Hatchback, 2.0 K, Standard: P215/60R14
GT, 2D Coupe, 2.0 M, Standard, MG1: P215/60R14
GT, 4D Sedan, 2.0 K, Automatic: P215/60R14
GT, 4D Sedan, 2.0 K, Standard: P215/60R14
GT, 4D Sedan, 2.0 M, Automatic: P215/60R14
SE, 2D Convertible, 2.0 M, Standard, MG1: P175/80R13
SE, 2D Convertible, 2.0 K, Standard: P175/80R13
GT, 2D Hatchback, 2.0 M, Standard, MG3: P215/60R14
GT, 4D Sedan, 2.0 M, Standard, MG3: P215/60R14
SE, 2D Convertible, 2.0 M, Automatic: P175/80R13
GT, 4D Sedan, 2.0 M, Standard, MG1: P215/60R14
SE, 2D Convertible, 2.0 M, Standard, MG3: P175/80R13
SE, 2D Coupe, 2.0 M, Standard, MG1: P175/80R13
SE, 2D Coupe, 2.0 M, Automatic: P175/80R13
SE, 2D Coupe, 2.0 K, Automatic: P175/80R13
SE, 2D Coupe, 2.0 K, Standard: P175/80R13
SE, 2D Hatchback, 2.0 K, Standard: P175/80R13
SE, 2D Coupe, 2.0 M, Standard, MG3: P175/80R13
SE, 2D Hatchback, 2.0 M, Automatic: P175/80R13
SE, 2D Hatchback, 2.0 M, Standard, MG1: P175/80R13
SE, 2D Convertible, 2.0 K, Automatic: P175/80R13
SE, 2D Hatchback, 2.0 M, Standard, MG3: P175/80R13
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