The 1985 Pontiac Grand Prix tire size depends on trim: the Base, 3.8 A takes P195/75R14; the Base, 5.0 H, 200-4R/MW9 takes P195/75R14; the Base, 5.0 H, 200C/MV9 takes P195/75R14; the Base, 5.0 H, 700R4/MD8 takes P195/75R14; the Brougham, 3.8 A takes P205/70R14; the Brougham, 5.0 H, 200-4R/MW9 takes P205/70R14; the Brougham, 5.0 H, 200C/MV9 takes P205/70R14; the Brougham, 5.0 H, 700R4/MD8 takes P205/70R14; the LE, 3.8 A takes P195/75R14; the LE, 5.0 H, 200-4R/MW9 takes P195/75R14; the LE, 5.0 H, 200C/MV9 takes P195/75R14; the LE, 5.0 H, 700R4/MD8 takes P195/75R14, per the factory service manual.
Where to Buy & Install Tires for Your 1985 Pontiac Grand Prix
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