The 1989 Chevrolet S10 Pickup tire size depends on trim: the 2D Pickup Extra Cab, 2.5 E, Automatic takes P195/75R14; the 2D Pickup Extra Cab, 2.5 E, Standard takes P195/75R14; the 2D Pickup Extra Cab, 2.8 R, RWD takes P195/75R14; the 2D Pickup Extra Cab, 2.8 R, 4WD takes P195/75R15; the 2D Pickup Extra Cab, 4.3 Z, 4WD, Automatic takes P195/75R15; the 2D Pickup Extra Cab, 4.3 Z, 4WD, Standard takes P195/75R15; the 2D Pickup Extra Cab, 4.3 Z, RWD, Automatic takes P195/75R14; the 2D Pickup Extra Cab, 4.3 Z, RWD, Standard takes P195/75R14; the 2D Pickup, 2.5 E, Automatic takes P195/75R14; the 2D Pickup, 2.5 E, Standard takes P195/75R14; the 2D Pickup, 2.8 R, 4WD takes P195/75R15; the 2D Pickup, 2.8 R, RWD takes P195/75R14; the 2D Pickup, 4.3 Z, 4WD, Automatic takes P195/75R15; the 2D Pickup, 4.3 Z, 4WD, Standard takes P195/75R15; the 2D Pickup, 4.3 Z, RWD, Automatic takes P195/75R14; the 2D Pickup, 4.3 Z, RWD, Standard takes P195/75R14, per the factory service manual.
Factory-Spec Tire Size
Varies by trim
2D Pickup Extra Cab, 2.5 E, Automatic: P195/75R14
2D Pickup Extra Cab, 2.5 E, Standard: P195/75R14
2D Pickup Extra Cab, 2.8 R, RWD: P195/75R14
2D Pickup Extra Cab, 2.8 R, 4WD: P195/75R15
2D Pickup Extra Cab, 4.3 Z, 4WD, Automatic: P195/75R15
2D Pickup Extra Cab, 4.3 Z, 4WD, Standard: P195/75R15
2D Pickup Extra Cab, 4.3 Z, RWD, Automatic: P195/75R14
2D Pickup Extra Cab, 4.3 Z, RWD, Standard: P195/75R14
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