In Free practice session of WSBK 2012 at Assen Marco Melandri from Italy riding for BMW Motorrad Motosport team riding on BMW S1000RR was in first place.His fastest lap time was 1:37.582 seconds.He had a maximum top speed of 286.8 km/hr and 167.564 kms Average speed.
Following him in second place was defending champion Carlos Checa from Althea racing team riding Ducati 1098 R with a time difference of 0.129 seconds he had the fastest lap time of 1:37.711 and had a maximum top speed of 270.2 km/hr and average speed of 167.342 km/hr.
In third place was Tom Sykes from factory Kawasaki Racing team riding on Kawasaki Ninja ZX-10R with a total lap time of 1:37.781 with a time difference of 0.199 seconds and 0.070 seconds time difference between him and Carlos Checa.He had a 286.8 kms top speed and 167.223 kms average speed.
In fourth place was Michel Fabrizio from BMW Motorrad Italia Goldbet team riding BMW S1000RR Super bike with a time difference of 0.309 seconds.His Average speed was 167.035 while his top speed was 283.7 km/hr.
Jonathan Rea racing for factory Honda World Super bike team riding on Honda CBR1000RR finished in fifth place with a time difference of 0.586 seconds his average and top speed were 166.563 kms and 286.0 kms respectively.
The fastest man on the track in terms of top speed was Leon Haslam BMW Motorrad Motorsport which is the factory team of BMW in world super bike riding on BMW S1000RR with 289.1 km/hr top speed and 166.530 km/hr average speed.He finshed in sixth place.
Max Biaggi riding for factory Aprilia Racing team on Aprilia RSV4 Factory bike had a disapointing 17 th place finish with a time difference of 1.346 seconds.