The 1996 Mazda B2300 tire size depends on trim: the Base, 2D Pickup, RWD, Automatic takes P195/70R14 90S; the Base, 2D Pickup Extra Cab takes P195/70R14 90S; the Base, 2D Pickup, 4WD takes P215/75R15 100S; the Base, 2D Pickup, RWD, Standard takes P195/70R14 90S; the SE, 2D Pickup Extra Cab, Automatic takes P195/70R14 90S; the SE, 2D Pickup, Automatic takes P195/70R14 90S; the SE, 2D Pickup, Standard takes P195/70R14 90S; the SE, 2D Pickup Extra Cab, Standard takes P195/70R14 90S, per the factory service manual.
Factory-Spec Tire Size
Varies by trim
Base, 2D Pickup, RWD, Automatic: P195/70R14 90S
Base, 2D Pickup Extra Cab: P195/70R14 90S
Base, 2D Pickup, 4WD: P215/75R15 100S
Base, 2D Pickup, RWD, Standard: P195/70R14 90S
SE, 2D Pickup Extra Cab, Automatic: P195/70R14 90S