MILAN, Italy - Pirelli presented its 2013 range of colour-coded Formula 1 tyres with the hope that fans would see more overtaking and an end to one-stop races.The sole tyre supplier also said it was in talks with F1's chief executive supremo Bernie Ecclestone to extend its deal beyond this season.'NOTHING NEW FOR NOW'Pirelli president and CEO Marco Tronchetti Provera said: "We are obviously willing to continue this adventure."The teams are satisfied and the partnership we have with F1 is a successful one, a win-win co-operation. That is why I am confident we will have a new agreement from next year, but there is nothing new for the time being."The Italian company's range of tyres has undergone a revolution with new structures and new compounds aimed at producing more exciting racing and ensuring at least two stops per driver in every race.The 2012 season started with an unprecedented seven different winners in the first seven grands prix but the racing became more predictable as teams understood the tyres better.Pirelli's motorsport director Paul Hembery said it would be wishful thinking to expect a repeat of 2012's first seven races but looked forward to an interesting season with new challenges for teams and drivers.Hembery said: "The result at the end of the year was races with less competition and sometimes only one pit stop.""This phenomenon was also observed in 2011, disappointing many fans and prompting some of the teams to ask us to continue developing our tyres further this year in order to provide a fresh challenge with something different."Our 2013 range of tyres mixes up the cards once more to help overtaking and ensure two to three pit stops per race," he said.The P Zero range of dry weather tyres are faster by up to 0.5 seconds a lap and the performance gap between the compounds is also at least half a second in order to enhance race strategy and differences in speeds during the race.1800 TYRES AT EACH GPThe sidewalls will have new markings, with orange now denoting the hardest compound instead of the silver that was used in 2012.Pirelli said the new hard tyre would be roughly equivalent to 2012's medium compound, with softer sidewalls but stronger shoulders.Improved traction, especially on the exit of corners, should translate into faster lap times.The tyres are made at a factory in Turkey and sent to a logistics hub in Britain before being shipped to the various circuits. Each car will have 11 sets available per race weekend, made up of six sets of the harder compound and five of the softer.Pirelli will take some 1800 tyres to every race of the 2013 F1 season, which begins in Melbourne on March 17.