The 1994 Chevrolet Astro tire size depends on trim: the Van Cargo Extended, 4.3 W, AWD takes P245/60R15 100H; the Van Cargo Extended, 4.3 W, RWD takes P245/60R15 100H; the Van Cargo Extended, 4.3 Z takes P245/60R15 100H; the Van Cargo, 4.3 W, AWD takes P245/60R15 100H; the Van Cargo, 4.3 W, RWD takes P245/60R15 100H; the Van Cargo, 4.3 Z takes P245/60R15 100H; the Van Passenger Extended, 4.3 W, AWD takes P245/60R15 100H; the Van Passenger Extended, 4.3 W, RWD takes P245/60R15 100H; the Van Passenger Extended, 4.3 Z takes P245/60R15 100H; the Van Passenger, 4.3 W, AWD takes P245/60R15 100H; the Van Passenger, 4.3 Z takes P245/60R15 100H; the Van Passenger, 4.3 W, RWD takes P245/60R15 100H, per the factory service manual.
Factory-Spec Tire Size
Varies by trim
Van Cargo Extended, 4.3 W, AWD: P245/60R15 100H
Van Cargo Extended, 4.3 W, RWD: P245/60R15 100H
Van Cargo Extended, 4.3 Z: P245/60R15 100H
Van Cargo, 4.3 W, AWD: P245/60R15 100H
Van Cargo, 4.3 W, RWD: P245/60R15 100H
Van Cargo, 4.3 Z: P245/60R15 100H
Van Passenger Extended, 4.3 W, AWD: P245/60R15 100H
Van Passenger Extended, 4.3 W, RWD: P245/60R15 100H