In testing at Jerez on the team will receive 35 sets of rubber

Each team is on a four day test in Jerez will receive 35 sets of rubber. About Pirelli said in its press release.
Teams will be able to choose between Hard, Medium and Soft, if required, they will be given rain and intermediate tyres. The soft rubber, Supersoft, tire decided not to bring, as its characteristics are not suitable for the road.
Paul Hembry, head of Pirelli Motorsport: "the Team will get tires that are significantly different from those that they have used in the past year, as the composition and design of each option P Zero changed. The new composition is soft and the tires differ in design, providing a larger contact patch that will improve the grip. This is one of the key aspects of the tests in Jerez, and we hope that by the time the team will return home, they will better understand the properties of our new tires".
Compositions For each team Best result in 2012
Supersoft No No
Soft 1 01:17,613 (third day)
Medium 6 01:19.670 (first day)
Hard 7 01:18.561 (third day)
Intermediate 3 No
Wet 3 No

the preset number of sets. Besides, each team has the right to choose another 15 sets.