TIRE SPEED RATINGS
| LETTER | KM/H |
| Q | 160KM/H |
| R | 170KM/H |
| S | 180KM/H |
| T | 190KM/H |
| U | 200KM/H |
| H | 210KM/H |
| V | 240KM/H |
| W | 270KM/H |
| Y | 300KM/H |
| (Y) | 300+KM/H |
| Z | 300+KM/H |
| A1 | 5KM/H |
| A2 | 10KM/H |
| A3 | 15KM/H |
| A4 | 20KM/H |
| A5 | 25KM/H |
| A6 | 30KM/H |
| A7 | 35KM/H |
| A8 | 40KM/H |
| B | 50KM/H |
| C | 60KM/H |
| D | 65KM/H |
| E | 70KM/H |
| F | 80KM/H |
| G | 90KM/H |
| J | 100KM/H |
| K | 110KM/H |
| L | 120KM/H |
| M | 130KM/H |
| N | 140KM/H |
| P | 150KM/H |