Guides & Explainers
To the casual viewer, they are just black rubber circles with different colored stripes. But Pirelli’s Formula 1 tyre range dictates the entire flow, strategy, and pace of a Grand Prix weekend. Understanding the compound scale is the key to reading race strategy.
The C1 to C5 Scale
Pirelli produces five slick tyre compounds for dry conditions, ranging from C1 (the hardest) to C5 (the softest). For every Grand Prix, Pirelli selects three of these compounds based on the track's abrasiveness and thermal loads. They are then rebranded for the weekend as:
- The Hard Tyre (White Striped): The most durable tyre. It takes a long time to warm up to its operating window, but it can endure long stints without heavy degradation. It yields slower lap times but requires fewer pit stops.
- The Medium Tyre (Yellow Striped): The strategic bridge. It offers a balance of longevity and immediate grip, making it the most common tyre for starting a race.
- The Soft Tyre (Red Striped): The qualifying specialist. Softs offer massive immediate grip, allowing for the fastest possible lap times. However, they overheat and degrade rapidly, making them suitable only for short bursts or aggressive late-race attacks.
When the Heavens Open: Inters and Wets
When it rains, slicks become completely useless. Teams switch to Intermediates (Green) for damp/drying tracks, which evacuate 30 liters of water per second. In heavy monsoons, they bolt on Full Wets (Blue), featuring deep treads capable of clearing an astonishing 85 liters of water per second at 300 km/h to prevent aquaplaning.