The most common tyre size on the DS No 8 is 235/50R20 (overall diameter ≈ 743 mm). Exact fitment depends on generation and engine — full breakdown below.
| Engine | Tyre sizes |
|---|---|
| N° 8 - 141 PS - Electrical | 235/50R20 235/55R19 255/40R21 |
| N° 8 - 143 PS - Electrical | 235/50R20 235/55R19 255/40R21 |
| N° 8 - 188 PS - Electrical | 235/50R20 235/55R19 255/40R21 |