Merc power wearing out Pirellis
SECOND IN SEPANG: Sauberr's Sergio Perez certainly seemed happy with his Pirellis when he came second in the 2012 Malaysian F1 GP at Sepang.
McLaren, Mercedes and Force India have all struggled with excessive tyre wear this season - but now, perhaps, know why.
According to Germany's Auto Motor und Sport, the likely culprit is the trio's engine supplier - McLaren.
"Lotus, Red Bull and Ferrari can make a set of tyres last longer than we can," said McLaren's Lewis Hamilton.
Auto Motor und Sport said one theory doing the rounds was that the superior mid-range power of the Mercedes V8 is wearing the rear Pirellis too much.
Sauber's Sergio Perez said: "On the way out of corners, we are able to keep up, but then there comes a phase when the Force India cars can pull away, so long as their tyres are fresh."
Mercedes' team boss Ross Brawn acknowledged that "the characteristic of the engine has a large influence on the degradation of the tyres".
Auto Motor und Sport said Mercedes had "recognised the problem" and was working at full speed to improve its engine torque maps.