93/94 - United had a 7 point lead after 11 games (42 game season), won the league by 8 points.
05/06 - Chelsea had a 6 point lead after 10 and 11 games, won the league by 8 points.
10/11 - Chelsea had a 5 point lead after 10 games, only had a 2 point lead after 11 games, United won the league by 9 points ahead of Chelsea.
11/12 - City had a 5 point lead after 10 and 11 games in 11/12, won the league on goal difference.
13/14 - Arsenal had a 5 point lead after 10 games, only had a 2 point lead after 11 games, City won the league by 2 points, 7 points ahead of Arsenal.
14/15 - Chelsea had a 4 point lead after 10 and 11 games, won the league by 8 points.
That's all the teams that have had a 4 point+ lead after 10 and 11 games.
Records suggest that anything more than a 4 point lead after 11 games is enough, 2011/12 should be a lesson though.