First post on RD so be kind to me. Alongside of undertaking my single player career mode, I am going to start doing coop career mode on F1 2011 with a contact of mine who agreed to help me out as I need to unlock both the Teamwork (Win the Constructors' World Championship in Coop Championship) and Co-op Drivers' World Champion (Win the Drivers World Championship in Coop Championship). My contact of mine has already got both achievements so has agreed to act as number 2 driver and assist me with my work plus they are a clean good racer. We agreed to do 50% race distance (results are more even than lower distances), Expert difficulty and Legend AI and now need to decide what team to use and really want to get both achievements on my first try. My contact has given me the responsibility of picking what team we are going to race for. Now here is the dilemma. From watching videos and reading on various sources that the Tier 1 teams of McLaren, Ferrari and Red Bull are a bit of an overkill including my contact who ran with McLaren had said it was a bit too easy. Of course running the Tier 5 teams of HRT, Lotus and Virgin without KERS would be very difficult to win and probably Tier 4 would be tricky using Williams and Force India as in my current single player season 1 career with Williams on Expert difficulty and Legend AI, I am only scoring low end points throughout the season. So that leaves me with the Tier 2 teams of Lotus Renault and Mercedes and Tier 3 teams of Sauber Ferrari and Toro Rosso Ferrari. Therefore, I am asking people who have run either Tier 2 or Tier 3 teams in coop championship career have you managed to win both the drivers and constructors world championship with an ally and how much of a challenge is it to win. Just remember the points above and want to win it on my first try so no second chances! Also are there any tips and advice you wish to share with me and anything I need to be aware of whilst doing coop championship. Thanks in advance.