DISCOVER ALL TIRES RANGE
C1 stands for Compound 1, and it is the hardest tire in the 2021 Pirelli range. It is designed for circuits that put the highest energy loadings through the tires, which will typically feature fast corners, abrasive surfaces, or high ambient temperatures. The compound takes longer to warm up but offers maximum durability and provides low degradation.
C2 means Compound 2, which is a very versatile compound that sits at the harder end of the spectrum. It comes into its own on circuits that tend towards high speeds, temperatures, and energy loadings. This tire has demonstrated an ample working range and adaptability to a wide variety of different circuits.
C3, or Compound 3, strikes a very good balance between performance and durability, with the accent on performance. It is a very adaptable tire that can be used as the softest compound at a high-severity track as well as the hardest compound at a low-severity track or street circuit. It is one of the most commonly used compounds of all.
C4 – Compound 4 – works well on tight and twisty circuits. It has a rapid warm-up and huge peak performance, but the other side of this is its relatively limited overall life. However, the improved consistency of this year’s compounds should mean that the softer rubber is capable of more versatile use and less prone to overheating.
C5, which stands for Compound 5, is the heir to the universally-popular hyper-soft: the fastest compound that Pirelli has ever made. This tire is suitable for all circuits that demand high levels of mechanical grip, but the trade-off for this extra speed and adhesion is a considerably shorter lifespan than the other tires in the range. It is not a qualifying tire, but it comes closest.
The intermediates are the most versatile of the rain tires. They can be used on a wet track with no standing water, as well as a drying surface. This tire evacuates 30 litres of water per second per tire at 300kph. The compound has been designed to expand the working range, as seen at a number of races last year, guaranteeing a wide crossover window both with the slicks and the full wets.
The full wet tires are the most effective for heavy rain. These tires can evacuate 85 litres of water per second per tire at 300kph: when it rains heavily, visibility rather than grip causes issues. The profile has been designed to increase resistance to aquaplaning, which gives the tire more grip in heavy rain. The diameter of the full wet tire is 10mm wider than the slick tire.