PIrelli final report from Bahrain Formula 1 testing 10 April, 2014 Pirelli has completed the first in-season test using the current 2014 cars: an innovation for this year designed to help the Italian tyre-maker develop suitable tyres for the latest-generation Formula One cars. A total of eight new constructions and six new compounds were tested during the two days: split between Caterham on Tuesday then Mercedes and Williams on Wednesday. Only one variable was tested at a time, so if a new compound was being tested, then the construction would be the current one (and vice versa). The teams alternated prototype runs with baseline runs on the existing tyres, for comparison purposes. The 250 experimental tyres brought to Bahrain, distinguished by being free from any colour stripes on the sidewall, were exclusively designed with 2015 in mind. Over the course of the two days, Pirelli completed a total of 110 laps and around 595 kilometres with experimental tyres, in ambient and track temperatures that were a lot hotter than those of the grand prix weekend. Pirelli’s Motorsport Director Paul Hembery said: “The opportunity to test with the current cars is something that we have always wished for and it was vital to have this written into the regulations this year. We made useful progress throughout both days of the prototype tyre test, trying out a number of solutions with 2015 in mind, in demanding conditions. Having accumulated this valuable data over two days, we will now analyse it carefully to assess the best development direction for the next in-season test in Barcelona, where we expect to see further evolutions in car performance.” Testing facts: The maximum temperature reached was 35 degrees ambient and 44 degrees on track at 2 PM on Wednesday. The fastest time set throughout the two days of the test was a 1m34.136s benchmark from Hamilton on Wednesday morning, on an experimental tyre. As well as the running on experimental tyres, the teams that were not testing specifically for Pirelli ran with the current tyres. Teams are allowed an overall maximum total of 135 sets of tyres for testing this year, including the in-season tests. Caterham ran a total of 64 laps with Robin Frijns on Tuesday before a hydraulic problem curtailed running in the afternoon. Frijns tested one new construction and two new compounds. On Wednesday, Mercedes ran a total of 120 laps with Lewis Hamilton, testing three new constructions and three new compounds. Williams ran a total of 64 laps with Felipe Nasr, testing two new constructions and one new compound. The team stopped in the afternoon with a technical issue. The next in-season test will take place after the Spanish Grand Prix. Sauber and Toro Rosso will test for Pirelli on the opening day, followed by Force India and McLaren on day two. The final tyre test will be held at Silverstone, after the British Grand Prix. Ferrari and Lotus will drive on the opening day, followed by Red Bull and Marussia on day two. Subbed by AJN. Day 1 Testing Times Rosberg Mercedes 1m35.697s Soft Hulkenberg Force India 1m36.064s Soft Alonso Ferrari 1m36.626s Medium Magnussen McLaren 1m36.634s Soft Bottas Williams 1m37.305s Soft Chilton Marussia 1m37.678s Supersoft Ricciardo Red Bull 1m38.326s Soft Sirotkin Sauber 1m39.023s Soft Frijns Caterham 1m40.027s Experimental Maldonado Lotus 1m40.183s Soft Kvyat Toro Rosso 1m40.452s Soft Day 2 Testing Times Hamilton Mercedes 1m34.136s Experimental Vergne Toro Rosso 1m35.557s Supersoft Magnussen McLaren 1m36.203s Soft Perez Force India 1m36.586s Soft Ricciardo Red Bull 1m37.310s Soft Bianchi Marussia 1m37.316s Supersoft Van der Garde Sauber 1m37.623s Soft Alonso Ferrari 1m37.912s Medium Ericsson Caterham 1m39.263s Soft Nasr Williams 1m39.879s Experimental Grosjean Lotus 1m43.732s Soft Reports on GrandPrix247.com by: staff & contributors, Reuters syndication, GMM service, Formula 1 teams, sponsors & organisations.