Hamilton happy at minor change in tyre pressures
Lewis Hamilton hailed Pirelli's decision not to push ahead with their proposal to introduce a substantial hike in tyre pressures for this week's Italian Grand Prix.
Pirelli, Formula One's sole tyre supplier, had initially suggested an increase in five psi after they suffered two high-profile blow-outs at the last meeting in Belgium.
Hamilton, who was fastest in both sessions here, said: "The team worked hard to speak with Pirelli and get them to bring the pressures down.
"There was much more sensible change when they came down with it this morning. It is only one psi more so it is not a huge difference."
Hamilton, 28 points ahead of Rosberg, finished the opening session almost half-a-second clear of his Mercedes team-mate.
But Rosberg will draw some confidence from the fact that he was only 0.021secs shy of Hamilton's best lap of one minute 24.279secs in the afternoon.
Sebastian Vettel's Ferrari was three-quarters of a second slower than the Mercedes duo.