Pirelli F1 Bahrain GP practice sessions review

Pirelli F1 Bahrain GP practice sessions review

17.04.2015: - Low thermal degradation from both medium and soft compounds in conditions representative

   
     
- Low thermal degradation from both medium and soft compounds in conditions representative of the race

- Two seconds separate the two compounds so far

- Sandstorm possible for tomorrow



The Friday free practice sessions were in marked contrast to each other in Bahrain. The opening FP1 session at 2pm was held in ambient temperatures in excess of 35 degrees centigrade and track temperatures in excess of 50 degrees centigrade, while FP2 at 6pm took place in darkness, with ambient temperatures below 30 degrees and track temperatures in the region of 32.


As qualifying and the race will take place at 6pm, only the second session was truly representative of competitive conditions. In this session, with track temperatures in the region of 32 degrees centigrade, the P Zero White medium and P Zero Yellow soft compounds nominated for the race displayed rates of thermal degradation in line with expectations, despite the roughest track surface of the season and ambient temperatures that were still as high as 29 degrees.


There is usually a high degree of track evolution in Bahrain, due to sand from the surrounding desert blowing onto the surface. Currently, there is a performance gap of around two seconds between the medium and soft compounds, which opens up several possibilities for strategy. However, this gap is likely to come down if the track rubbers in with help from all the support races.


One rogue element that could upset this is the possibility of a sandstorm, which has been forecast for tomorrow. This would diminish grip, as Pirelli also discovered during a winter development test in Bahrain at the end of 2010, when running was actually interrupted for a day while the storm dispersed.


Mercedes drivers were first and second fastest in FP2, with Nico Rosberg leading Lewis Hamilton, but the Ferrari drivers monopolised FP1, with Kimi Raikkonen in front of Sebastian Vettel. Initial analysis of the long-run pace suggests quite a close contest between the two manufacturers.


Paul Hembery:
“The pattern of wear and degradation today was exactly as we expected, especially in FP2, which was the only really relevant session. From a tyre perspective, there was less to be learned from FP1, which was nearly 20 degrees warmer.


While the pattern of data collection is a little bit different to other races because of these temperatures differences, we’re seeing that the soft tyre will be key to the race – which is around two seconds quicker than the medium. However, there is talk of a sandstorm tomorrow and that’s not generally good news for tyres or anyone! So we’ll see what qualifying brings…”



FP1:              FP2:        
 

1. Raikkonen    1m37.827s    Medium new    1. Rosberg    1m34.647s    Soft new
2. Vettel    1m38.029s    Medium new    2. Hamilton    1m34.762s    Soft new
3. Bottas    1m38.390s    Medium used    3. Raikkonen    1m35.174s    Soft new



Tyre statistics of the day:


     Medium    Soft    Intermediate    Wet


kms driven *    3206    1836    0    0
sets used overall **    59    20    0    0
highest number of laps **    25    22    0    0

* The above number gives the total amount of kilometres driven in FP1 and FP2 today, all drivers combined.

** Per compound, all drivers combined.



Pirelli facts of the day:


Bahrain is actually an archipelago of 33 islands. The largest, on which the track is situated, is 55km long by 18km wide while areas such as Sitra and Al Muharraq are actually separate islands.
 
 
 
             


Maria Stella Narciso , Anthony Peacock  - photo Pirelli

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17.04.2015 / MaP

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