Hamilton keeps Italian Grand Prix win

By on Sunday, September 6, 2015
Mercedes AMG Petronas

Mercedes AMG Petronas

Lewis Hamilton has kept his victory at the Italian Grand Prix following an investigation for an alleged tyre breach.

Hamilton dominated proceedings all weekend at Monza and finished comfortably ahead of Ferrari’s Sebastian Vettel.

However, the Technical Delegate issued a report during the race that both Hamilton and team-mate Nico Rosberg’s left rear tyres flouted the minimum starting pressure specification of 19.5 PSI when measured on the grid and after the five minute signal prior to the start.

Hamilton’s left rear tyre was deemed to be 0.3 PSI below the minimum requirement, with Rosberg’s measuring at 1.1 PSI underneath.

A stewards' investigation concluded that the tyres were above the 19.5 PSI requirement when fitted to the car on the grid.

"Having heard from the Technical Delegate, the Team Representatives and the Pirelli Team Tyre engineer, the Stewards have determined that the pressure in the tyres concerned were at the minimum start pressure recommended by Pirelli when they were fitted to the car," read the stewards' report.

"In making this determination regarding the pressures, 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.

"Nevertheless, the Stewards recommend that the Tyre Manufacturer and the FIA hold further meetings to provide clear guidance to the teams on measurement protocols."

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