Nico Rosberg lifts lid on 'extreme' F1 title battle with Lewis Hamilton at Mercedes

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Mercedes teammate Lewis Hamilton in 2016.During a four-year stint as teammates, Rosberg and Hamilton dominated the sport, winning 54 of 78 races in that period, with the two childhood friends seeing their relationship turn sour in the process.Hamilton won the titles in 2014 and 2015, with tempers boiling over in the 2016 season as Rosberg looked to win the title for the first time - leading to a number of incidents were the two teammates ended up colliding, with Toto Wolff describing an incident at Austria as 'brainless'.During this spell, Mercedes had to step-up to outline rules for the two drivers in order to keep them on the straight and narrow, putting punishments in place for any rule breaks, and Rosberg has lifted the lid on that battle."We made it extremely difficult.

It got to the point where we were handed a code of conduct paper with what we were able to do in a wheel-to-wheel battle, even penalties with fines with a lot of zeroes attached to that because there was no other way.

It just got too extreme," he told Sky Sports."I don't have regrets. There was some very difficult situations but everything culminated in winning the championship, especially against someone as great as Lewis."Hamilton's rivalry with Rosberg has often been compared to some of the great rivalries in F1 history, including the likes of Ayrton Senna and Alain Prost.HAVE YOUR SAY!

Is Nico Rosberg's rivalry with Lewis Hamilton one of F1's greatest? Comment below.Rosberg retired just five days after clinching his one and only world title in 2016, a decision that Hamilton has said he wasn't surprised by, with both drivers saying in the years since that they have no intention of rekindling their relationship.However, the German driver stated in.