Scorpion GM
These tires are designed for gravel rally use and are available in hard and soft compounds.
The Pirelli GM is a tire designed for gravel roads and developed for historic rally cars. Its tread pattern is tailored for use in dry, damp, wet, or muddy conditions, depending on the compound selected. A key characteristic of the Pirelli GM is its versatility, supported by an asymmetric tread pattern designed to balance directional stability and traction across a range of conditions. Performance is shaped by three compound options: GM4, GM6, and GM8. The GM4 compound is intended for dry surfaces and is suited to hard, abrasive terrain and higher temperatures. GM6 is developed for wet surfaces and lower temperatures, supporting traction and lateral grip. The GM8 compound is designed for muddy conditions and lower temperatures, where it can help support consistent performance.
Conditions | |||||||||
|---|---|---|---|---|---|---|---|---|---|
Size | Version | Overall Diameter (Ø mm) | Section Width (mm) C | Tread Width (mm) C | RollingCircumference | Rim | Wet | Damp | Dry |
165/80R13 | GM6-GM8 | 600 | 170 | 135 | 1871 | 5.5 | 8 | 6 | 4 |
185/70-15 | GM6-GM8A | 640 | 203 | 160 | 2015 | 6.5 | 8 | 8 | 6 |
185/70R13 | GM4-GM6-GM8 | 600 | 195 | 160 | 1875 | 6 | 8 | 6 | 4 |
Temperature
Compound | Surface | ||||
|---|---|---|---|---|---|
WORKING TEMPERATURE °C | SOFT/SANDY | PACKED | HARD/ROCKY | ||
Super soft | GM8 | 20°-60° | 100 | 49 | 0 |
Soft | GM6 | 50°-90° | 0 | 100 | 0 |
Medium | GM4 | 70°-130° | 0 | 51 | 100 |
Pressure information
Compound | Condition | Air temperature (°C) | Pressure (Bar) | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
WET | DAMP | DRY | -5 | 0 | 5 | 10 | 15 | 20 | 25 | 30 | 30+ | COLD PS START | HOT PS END | |
Super soft | 100 | 100 | 49 | 100 | 100 | 100 | 100 | 0 | 0 | 0 | 0 | 0 | 1.8 | 2.2-2.4 |
Soft | 0 | 51 | 100 | 0 | 0 | 0 | 100 | 100 | 100 | 100 | 0 | 0 | 1.8 | 2.2-2.4 |
Medium | 0 | 0 | 100 | 0 | 0 | 0 | 0 | 0 | 100 | 100 | 100 | 100 | 1.6 | 2.2-2.4 |