The race is the fourth event on the 2012 F1 calendar and takes place at the 3.3-mile Bahrain International Circuit in Sakhir.
This year, the circuit layout has reverted to the shorter 2009 layout and not the configuration last raced in 2010.
One of the main problems imposed by this circuit is the very hot local ambient conditions of typically 95 degrees F (35 degrees C) and track temperature rising into 104 degrees F (40 degrees C) and above. These conditions force teams to open up the engine cooling bodywork which in turn can adversely affect the aerodynamic efficiency.
The layout of the circuit means the likelihood of a safety car is very low. The DRS zone detection point is just before the penultimate corner and the activation point is along the main straight. Engines are at full throttle for 50 percent of the lap in the race and 57 percent in qualifying. As a result, Bahrain sits in the middle of the table for the demands put on engines. With the DRS this year, the top speed down the pit straight will be around 192 mph.
So far, during practice earlier today, McLaren’s Lewis Hamilton has proven fastest, just ahead of Red Bull Racing’s Sebastian Vettel. Not far off the young Brit’s pace was Force India’s Paul di Resta, Chinese Grand Prix winner Nico Rosberg and McLaren teammate Jenson Button.
Going into tomorrow’s qualifying session and Sunday’s eventual race, Hamilton holds the world championship lead with 45 points to Button's 43. Ferrari’s Fernando Alonso, Bahrain’s 2010 winner, lies third with 37; McLaren's got the constructor's lead with 88 points to Red Bull's 64, Ferrari's 37, Sauber's 31, Mercedes' 26 and Lotus' 24 points.