The 1998 Plymouth Neon tire size depends on trim: the High Line, 2D Coupe, 2.0 C, Automatic takes P175/70R14 84T; the High Line, 2D Coupe, 2.0 C, Standard takes P175/70R14 84T; the High Line, 2D Coupe, 2.0 Y, Automatic takes P175/70R14 84T; the High Line, 2D Coupe, 2.0 Y, Standard takes P175/70R14 84T; the High Line, 4D Sedan, 2.0 C, Automatic takes P175/70R14 84T; the High Line, 4D Sedan, 2.0 C, Standard takes P175/70R14 84T; the High Line, 4D Sedan, 2.0 Y, Automatic takes P175/70R14 84T; the High Line, 4D Sedan, 2.0 Y, Standard takes P175/70R14 84T; the _NA_, 2D Coupe, 2.0 C, Automatic takes P175/65R14 81H; the _NA_, 2D Coupe, 2.0 C, Standard, A578 takes P175/65R14 81H; the _NA_, 2D Coupe, 2.0 C, Standard, T350 takes P175/65R14 81H; the _NA_, 2D Coupe, 2.0 Y, Automatic takes P175/70R14 84T; the _NA_, 2D Coupe, 2.0 Y, Standard, A578 takes P175/70R14 84T; the _NA_, 2D Coupe, 2.0 Y, Standard, T350 takes P185/65R14 85H; the _NA_, 4D Sedan, 2.0 C, Automatic takes P175/65R14 81H; the _NA_, 4D Sedan, 2.0 C, Standard, A578 takes P175/65R14 81H; the _NA_, 4D Sedan, 2.0 C, Standard, T350 takes P175/65R14 81H; the _NA_, 4D Sedan, 2.0 Y, Automatic takes P175/70R14 84T; the _NA_, 4D Sedan, 2.0 Y, Standard takes P175/70R14 84T, per the factory service manual.
Factory-Spec Tire Size
Varies by trim
High Line, 2D Coupe, 2.0 C, Automatic: P175/70R14 84T
High Line, 2D Coupe, 2.0 C, Standard: P175/70R14 84T
High Line, 2D Coupe, 2.0 Y, Automatic: P175/70R14 84T
High Line, 2D Coupe, 2.0 Y, Standard: P175/70R14 84T
High Line, 4D Sedan, 2.0 C, Automatic: P175/70R14 84T
High Line, 4D Sedan, 2.0 C, Standard: P175/70R14 84T
High Line, 4D Sedan, 2.0 Y, Automatic: P175/70R14 84T
High Line, 4D Sedan, 2.0 Y, Standard: P175/70R14 84T