Pirelli boss Paul Hembery is expecting a much faster field of 2015.
Pirelli and the FIA have renewed their Formula One tyre supply contract.
Pirelli boss Paul Hembery claimed that "some teams went against our recommendations".
Formula One drivers continue to complain and worry about the Pirelli tyres, and now Perez adds his thoughts after the Korean Grand Prix.
It appears that Michelin has been preparing to return to Formula One
At Spa-Francorchamps rumours again surfaced regarding a possible change of a tyre supplier