The 1997 Nissan Pickup tire size depends on trim: the Base takes P195/75R14 92S; the SE, 4WD takes P235/75R15 105S; the SE, RWD, Automatic takes P195/75R14 92S; the SE, RWD, Standard takes P195/75R14 92S; the XE, 2D Pickup Extra Cab, 4WD takes P235/75R15 105S; the XE, 2D Pickup Extra Cab, RWD, Automatic takes P195/75R14 92S; the XE, 2D Pickup Extra Cab, RWD, Standard takes P195/75R14 92S; the XE, 2D Pickup, 4WD takes P235/75R15 105S; the XE, 2D Pickup, RWD, Automatic takes P195/75R14 92S; the XE, 2D Pickup, RWD, Standard takes P195/75R14 92S, per the factory service manual.
Factory-Spec Tire Size
Varies by trim
Base: P195/75R14 92S
SE, 4WD: P235/75R15 105S
SE, RWD, Automatic: P195/75R14 92S
SE, RWD, Standard: P195/75R14 92S
XE, 2D Pickup Extra Cab, 4WD: P235/75R15 105S
XE, 2D Pickup Extra Cab, RWD, Automatic: P195/75R14 92S
XE, 2D Pickup Extra Cab, RWD, Standard: P195/75R14 92S