Originally Posted by crake:
“It's not within the rules -- in-season testing is banned. It seems a special exception was made here. Very unfair, but I don't see what the other teams can do since it was sanctioned.”
It sounds as if it is within the rules for Pirelli to ask to use a team's car to test new tyres, so in that respect Mercedes haven't done anything wrong.
Obviously it would have been more fair if Pirelli had taken a 2012 car from one of the teams instead of a current car, but clearly that didn't happen.
As I said though, none of the teams would be protesting if their car had been asked for. So it does seem to me to be a case of them complaining because they weren't picked, when it was logical to pick the Mercedes as it's notoriously bad for tyre wear, and Pirelli are trying to avoid such high tyre wear so would need to test one of the cars that is hardest on its tyres. If the tyres are more durable for the Mercedes, then they should be even easier to manage for everyone else.