F1® TiRES RANGE
The rim diameter is 13 inches equally for front and rear.
The tread width of front tires.
The tread width of rear tires.
The diameter of dry tires.
Compared to the dry weather tires, the wet versions have a 10mm larger diameter.
THE SLICK TiRES
Dry weather tIres, known as slicks, are characterised by a tread pattern that is devoid of blocks or channels. They
come in four compounds: supersoft, soft, medium and hard. The different compounds mean that the tIres are well
suited to a wide variety of circuits, according to the type of asphalt, the number and severity of the corners, and
the top speed on the straights. This allows the teams to make use of an ample range of strategies. For each track,
Pirelli – in accordance with the FIA - nominates the two dry compounds best suited to the tracks characteristics and
the temperature to be expected.
WET WEATHER TIRES
Wet weather tIres, characterised by grooves in the tread pattern, are split into two types: full wets and intermediates. The full wet tires can be easily recognised by the deep grooves in the tread pattern and sipes to drain off water on wet asphalt. The intermediates feature channels that are less deep and are designed for damp or slightly wet surfaces, as well as uncertain weather conditions.
Cinturato™ Green Intermediate. The intermediates are the most versatile of the rain tires, dispersing approximately 25 litres of water per second at full speed. They can be used on a wet as well as a drying track.
Cinturato™ Blue Wet. The full wet tyres can disperse up to 65 litres of water per second at full speed, making them the most effective solution for heavy rain. The latest evolutions of the Cinturato Blue mean that it is also effective on a drying track, with increased durability. The result of this intensive work on the rain tire is increased driveability in a wide variety of conditions.
P Zero™ Red Supersoft. The softest compound in the range – which is completely new for this year – is ideal for slow and twisty circuits, especially in cold weather, when maximum mechanical grip is needed. The supersoft benefits from an extremely rapid warm-up time, which makes it ideal in qualifying as well, but the flip side to that important characteristic is of course increased degradation. This is a low working range compound. One of the key evolutions on all the tires this year has been optimisation of the footprint pressure and temperature distribution. This presents a more even contact with the asphalt, improving grip and handling. The supersoft is the only tire with a completely fresh design this year, created to offer greater resistance to graining and blistering.
P Zero™ Yellow Soft. This is one of the most frequently used tyres in the range, striking a very good balance between performance and durability, with the accent on performance. It is still biased towards speed rather than long distances, but is nonetheless capable of providing teams with a competitive advantage both at the beginning of the race on full fuel and when used as a ‘sprint’ tire at the end. This is a high working range compound.
P Zero™ White Medium. Theoretically this is the most perfectly balanced of all the tires, with an ideal compromise between performance and durability. As a result, it is extremely versatile, but it often comes into its own on circuits that tend towards high speeds, temperatures, and energy loadings. This is a low working range compound.
P Zero™ Orange Hard. The toughest tire in Pirelli’s range is designed for the circuits that put the highest energy loadings through the tires, with fast corners or abrasive surfaces, and are often characterised by high ambient temperatures. The compound takes longer to warm up, but offers maximum durability – which frequently means that it plays a key role in race strategy. This is a high working range compound.
WHAT’S NEW FOR 2015?
For the forthcoming Formula One season, Pirelli introduces a new family of tires, refined by Pirelli’s engineers using simulation technology and data supplied by teams as well as real on-track results. Here are the essentials:
•The tires have all been evolved from 2014 to meet the requirements of the latest cars, with the latest-specification hybrid power units and higher average speeds.
•A new concept to distribute heat and energy more evenly over the whole surface of every rear tire and therefore improve durability has been introduced. The supersoft tire is completely new, with both a different compound and construction on the front and rear.
•The compound designations and colours remain unchanged: P Zero Red (supersoft), P Zero Yellow (soft), P Zero White (medium), P Zero Orange (hard), Cinturato Green (intermediate), Cinturato Blue (full wet).
•The performance gap between the compounds stays the same (nearly a second per lap on average) – designed to open up as many strategic options as possible for the new generation of cars. Around two pit stops per car remains the target.
•The effect of the new engine regulations introduced last year is to increase wheelspin due to the extra torque and reduced rear downforce. In 2015, some cars could be up to two seconds per lap quicker, which is why the tires need to be even more resistant this year.