A spectacular tire failure for Nico Rosberg in FP2 at Spa has put the spotlight firmly on Pirelli.
The incident came shortly after the FIA warned F1 teams that there will be strict checks to ensure that parameters set by Pirelli are being respected.
Charlie Whiting sent out a technical directive after Friday's FP1 session in which he underlined that the checks were related to safety.
While there is no suggestion that Rosberg's Mercedes was running outside any of the prescribed parameters, the timing of the technical directive suggests that Pirelli faced some concerns after this morning's FP1 session. There has been controversy at Spa in past years, notably related to cambers.
The directive said: “Once again we have been asked by Pirelli, for reasons of safety, to ensure that all tires are used as laid out in '15R11SPA Preview,' circulated to all teams on 28 July, checks on the following parameters will made randomly.”
Whiting went on to clarify that the parameters that will be checked were minimum starting pressure front and rear, maximum negative EOS camber front and rear, left to right swapping of the tires both front and rear (which was an issue a couple of seasons ago), and respect of the tire blanket strategies.
He added that the checks would also be carried out at future events, and until further notice.
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