[QUOTE="Duffman1986, post: 6288053]2. You can only pick 2 top drivers, these must be only from Red Bull, McLaren, Mercedes and Ferrari.
3. The rest of your drivers must be 2 from either Force India, Sauber, Toro Rosso and Lotus F1 team and 2 from Williams, Caterham and Marussia.[/QUOTE]
So basically the three tiers are as so:
Tier 1: Red Bull, Ferrari, Mercedes, McLaren
Tier 2: Force India, Sauber, Toro Roso, Lotus
Tier 3: Williams, Caterham, Marussia
Who'd have thunk Williams would go from so far back to so far forward ala Brawn GP!