Lewis Hamilton has kept his Italian GP victory after an investigation by the FIA involving the tyre pressures on his car.
Tyre pressures have been a major talking point this weekend after the problems in Spa, and Pirelli made it clear that teams had to respect its mandated minimums for safety reasons. Unusually the pressures of the top four cars were measured at the last minute on the grid.
While the Ferraris were above the limit, one of Hamilton’s tyres was 0.3psi below the limit, and one of team mate Nico Rosberg’s was 1.1psi below. This was duly reported to the stewards.
However, after a long post-race investigation the FIA eventually concluded that the tyre pressures were in fact legal “when they were fitted to the car.”
The FIA added: “The stewards recommend that the tyre manufacturer and the FIA hold further meetings to provide clear guidance to the teams on measurement protocols.”
Team boss Toto Wolff said: “We were exactly on the minimum pressures like we should have been when the tyres were put on the car. I don’t know where the discrepancy came from, but it was not procedural and it was not a mistake done by the team in order to gain an advantage.
“Always being called to the stewards you are nervous after such a victory, having lost Nico’s car two laps to the end. So I’m a little bit relieved after that now.”