of the renowned GTE-Pro category. Counting with Henzler as third driver for the fourth consecutive year, finished 4th in the GTE-Pro class at the 24 Hours of Le Mans. In their participation in the 12 Hours of Sebring for Flying Lizard, again accompanying a Bergmeister and Long, finished in 6th position. No raced Petit Le Mans, although in the 24 Hours of Daytona, where he finished 6th in the GT class in a Brumos' Porsche 911. He also returned to win the 24 Hours of Nürburgring for Manthey, forming crew Bernhard, Dumas and Luhr. He also returned to pair with Alex Davison, but this time at the invitation of V8 Supercars to drive a Ford Falcon in Surfers Paradise Grand Prix, he finished 23rd and 18th in each race. In 2012, Felbermayr-Proton left the European Le Mans Series for the World Endurance Championship. Lieb continued teaming up with Lietz in the team. He earned two wins and six podiums in eight races, whereby Felbermayr-Proton finished 3rd in the teams championship and Porsche concluded second in the manufacturers championship. Also finished 3rd in the 24 Hours of Daytona, again in the Brumos' Porsche 911. On the other hand, returned to Surfers Paradise but this time he drove a Holden Commodore, finishing 2nd in the first round and 14th in the second. Porsche officially entered in the 2013 World Endurance Championship, Lieb and hired to drive one of the new Porsche 911 of Manthey alongside Lietz. Both, along with Dumas, won the 24 Hours of Le Mans, and captured five 4th-place finishes, one 5th-place finish as well as one 6th-place finish, counting as third driver a Dumas in the first three rounds. Thus, was fifth in the Drivers' Championship, and third in the teams and makes. Also came 2nd overall in the 24 Hours of Spa, and finishing 7th overall in the 24 Hours of Nürburgring and first in the SP7 class, also with Manthey. On the other hand, ran in the 24 Hours of Daytona with Brumos' Porsche 911, and the three rounds of minimatch resistance of V8 Supercars Holden Commodore with Jonathon Webb. Porsche then announced after the conclusion of the 2013 season that Lieb would be joining the Porsche 919 Hybrid LMP1 program for the 2014 WEC. As of 4 September 2013, Lieb set a lap time of 6:57 in Porsche's 918 Spyder around the Nürburgring Nordschleife. This is