Wet-weather specialist Felix Beyer was the first to venture out but quickly returned to the pits, with drivers only starting to filter onto track and set times after half of the three hour session had passed. It didn't take long for incident to occur, with a number of drivers missing their braking points at St Devote and skating down the escape road.
Rossendo Werner became the first major casualty just after an hour and forty as he hit the outside barrier at Casino but bounced back to the inside of the track, and brought about the first red flag. Just three minutes after cars made their way back out, the reds flew again as Aron Einarsson also hit the wall, his incident at Tabac.
Ten minutes passed before the third red flag, caused when championship challengers Nick Addison and Brock Kidd collided at the Lowes hairpin and blocked the track. The Australian was at fault, locking up from far back and t-boning the American Engineering racer, pinning him to the outside barrier.
The fourth red flag was caused by Michal Kubat twenty minutes from the end of the session as he crashed on the exit of the swimming pool chicane, while Keith Murphy ensured the session would end under a red flag by following him in with just two minutes left on the clock.
This left Puccio Giodano to head the times by two tenths from Felix Beyer, though numerous drivers commented after the session that times were 'completely unrepresentative' due to the dry conditions forecast for qualifying tomorrow, and the race on Sunday.
See below for full practice classification: