The most common tyre size on the Alfa Romeo 155 is 205/50R15 (overall diameter ≈ 586 mm). Exact fitment depends on generation and engine — full breakdown below.
| Engine | Tyre sizes |
|---|---|
| 1.6 TS 16V - 120 PS - Benzin - 1598 Hubraum | 175/65R14 185/60R14 195/55R15 195/60R14 205/45R16 205/50R15 |
| 1.7 TS - 116 PS - Benzin - 1748 Hubraum | 185/60R14 195/55R15 195/60R14 205/45R16 205/50R15 |
| 1.8 - 105 PS - Benzin - 1756 Hubraum | 185/60R14 195/55R15 195/60R14 205/50R15 |
| 1.8 TS - 126 PS - Benzin - 1773 Hubraum | 185/60R14 195/55R15 195/60R14 205/45R16 205/50R15 |
| 1.8 TS - 129 PS - Benzin - 1773 Hubraum | 185/60R14 195/55R15 195/60R14 205/50R15 |
| 1.8 TS 16V - 140 PS - Benzin - 1747 Hubraum | 175/65R14 185/60R14 195/55R15 195/60R14 205/45R16 205/50R15 |
| 1.9 TD - 90 PS - Diesel - 1929 Hubraum | 175/65R14 185/60R14 195/55R15 195/60R14 205/50R15 |
| 2.0 - 144 PS - Benzin - 1995 Hubraum | 195/55R15 195/60R14 205/50R15 |
| 2.0 Q4 - 186 PS - Benzin - 1995 Hubraum | 195/55R15 195/60R14 205/45R16 205/50R15 |
| 2.0 Q4 - 190 PS - Benzin - 1995 Hubraum | 195/55R15 195/60R14 205/50R15 |
| 2.0 TS - 141 PS - Benzin - 1995 Hubraum | 195/55R15 195/60R14 205/50R15 |
| 2.0 TS - 150 PS - Benzin - 1970 Hubraum | 195/55R15 205/45R16 205/50R15 |
| 2.5 TD - 125 PS - Diesel - 2499 Hubraum | 205/45R16 205/50R15 |
| 2.5 V6 - 163 PS - Benzin - 2492 Hubraum | 195/55R15 205/45R16 205/50R15 |
| 2.5 V6 - 165 PS - Benzin - 2492 Hubraum | 195/55R15 195/60R14 205/50R15 |