Pirelli boss Paul Hembery claimed that "some teams went against our recommendations".
Sahara Force India unveiled its 2013 challenger today as Paul Di Resta pulled the covers off the VJM06 at Silverstone circuit.
Mallya and Szafnauer answer questions about the Sahara Force India's VJM06 and the coming season.
Paul di Resta talks about the changes to the new season and his approach to it.
Global Motorsport Media