page_title: 2015 Italian Grand Prix
section_title: Post-race
hierarchical_section_title: 2015 Italian Grand Prix / Report / Post-race
caption_attribution_description: English: Podium celebrations at the 2015 Italian Grand Prix
context_page_description: The 2015 Italian Grand Prix was a Formula One motor race held on 6 September 2015 at the Autodromo Nazionale di Monza in Monza, Italy. The race was the twelfth round of the 2015 season, and marked the 85th running of the Italian Grand Prix.
  Lewis Hamilton of Mercedes was the defending race winner, and entered with a 28-point lead over teammate Nico Rosberg in the Drivers' Championship, with Sebastian Vettel a further 39 points behind. Mercedes lead the Constructors' Championship by 184 points over Ferrari, with Williams a further 81 points behind in third.
  Hamilton completed the second Grand Slam of his career by winning the race, taking pole position, setting the fastest lap and leading every lap of the race. He finished 25 seconds ahead of Vettel, while Felipe Massa finished third for Williams. Rosberg retired with three laps to go due to an engine failure, resulting in Hamilton extending his lead in the Drivers' Championship to 53 points.
context_section_description: For more than two hours after the race, Hamilton's victory was still up for debate, as his left rear tyres was found to have had 0.3psi less tyre pressure than regulated. While Lewis Hamilton stated in the post-race press conference that he had not been aware of the issue, Williams officials Pat Symonds and Rob Smedley called for Hamilton's disqualification, with the latter pointing out that it was "a safety issue". The stewards eventually decided not to take any further action, stating that: "In making this determination regarding the pressure, the stewards noted that the tyre warming blankets had been disconnected from their power source, as is normal procedure, and the tyres were significantly below the maximum permitted tyre blanket temperature at the time of the FIA's measurement on the grid and at significantly different temperatures from other cars measured on the grid. Further, the stewards are satisfied that the team followed the currently specified procedure, supervised by the tyre manufacturer for the safe operation of the tyres. Therefore, the stewards decide to take no further action."
  At the podium interview, conducted by film director George Lucas, Lewis Hamilton expressed gratitude to his team and the fans at the venue. Felipe Massa, asked about his last lap fight with teammate Bottas, stated: "I’m getting old for that! I even said to the team I’m getting old! The last three laps of the race I was fighting with my team-mate. It was very difficult but we managed to be here." During the post-race press conference, Hamilton expressed surprise over his championship lead, since he had not been made aware of Rosberg's retirement at that point. When asked about the tyre pressure issue, Sebastian Vettel defended Hamilton, saying: "I think it’s not fair to hand that question to Lewis because he doesn’t know what’s going on [...]. In a lot of respect and fairness he did a very good job today and you have to accept that."
  Following the race, Red Bull team principal Christian Horner said that Mercedes had made a "worrying step forward" with their new engine specification, admitting that the team was "in a league of their own at the moment". Nico Rosberg, who had raced with the old specification version of the power unit, described the race as a "massive step in the wrong direction". After the race, the team revealed that they had turned his engine up in order to help him catch Vettel in the closing stages. The team later admitted that using the new power unit at the Italian Grand Prix had been "a risk".
  As a result of the race, Lewis Hamilton extended his lead in the championship to 53 points over teammate Rosberg. His second-place finish meant that Sebastian Vettel moved closer to Rosberg, now trailing him by 21 points. In the Constructors' Championship, Mercedes now led the field on 451 points, with Ferrari and Williams in second and third, on 270 and 188 points respectively.
caption: The podium celebrations
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