Fiat Bertone Tire Sizes by Year

• 1989 — X1/9
• 1988 — X1/9
• 1987 — X1/9
• 1986 — X1/9
• 1985 — X1/9
• 1984 — X1/9
• 1983 — X1/9
• 1982 — X1/9