Ford Mustang 4-lug Bolt Pattern (Fox-body & Similar Years)
• Bolt Circle (PCD): 4 × 4.25 in
(also written as 4 × 108 mm)
• Stud Size: ½-20 UNF thread pitch (½-inch studs, 20 threads per inch)
• Center Bore: 70.5 mm
This pattern was common on:
• 1979–1993 Fox-body Mustangs (non-Cobra, 4-cyl, and 5.0 cars with stock 4-lug hubs)
• Some Ford/Lincoln/Mercury cars of the same era (e.g., Fairmont, Capri, Thunderbird, etc.)
