F1 2011 saw a number changes with the arrival of Pirelli tyres, the re-introduction of KERS and of course the advent of the Drag Reduction System (DRS).

DRS was brought in to aid overtaking and worked by allowing drivers' to open and shut a flap on the rear wing. Although it could be used at will in practice and qualifying, in the grand's prix themselves, its use was restricted to one or sometimes two zones - and while it did undoubtedly help drivers' overtake, there is no doubt at times it seemed overly artificial and dare we say it, a tad too easy.

But what did you think?

Was it a success or failure? Should DRS remain in the future?

On a scale of 1 to 5 (1 being, 'DRS was a failure and made overtaking too artificial to 5 being, 'it spiced up the races and was a success'), have your say now...

To vote in our poll CLICK HERE

You can also share your thoughts and opinions simply by clicking on the 'Post your comments' link below...