Singapore:Force India drivers measured the Marina Bay circuit in both wet and dry conditions as Adrian Sutil set the third fastest and Vitantonio Liuzzi seventh fastest time in the free practice session here on Friday ahead of Sunday`s Singapore Grand Prix.
Both Sutil and Liuzzi took 15 laps each of the 5.073km circuit in the 90-minute session, which began in wet conditions due to heavy rain shower just before the practice.
The Force India drivers tried the new high downforce aero tweaks introduced this weekend on the intermediate tyres.
When the weather condition got better, the duo completed their final runs of the practice on the prime tyres.
Mark Webber set the fastest time of 1:54.589 in his 10
laps ahead of Mercedes` Michael Schumacher (+0.119secs).
Both Sutil (+0.238secs) and Liuzzi (+0.921secs) were
within a second behind Webber`s timing.