Ross Brawn disagrees:zeph wrote:Mercedes say they had the permission of the FIA to participate. It is understood that their 2013 car was used and that the bulk of Pirelli's work focused on 2014 tyre development rather than on the Italian company's 2013 rubber...
http://www.autosport.com/news/report.php/id/107697
There is also no 2014 tyre development right now because Pirelli has no contract."We know they have a new tyre for Canada, but we don't know which of the tyres they tested was the tyre that they are bringing along to Canada. The tyres they tested were anonymous. It is not possible for us to know, because the tyres just had codes on - tyre Code A, tyre Code B."