Montreal safety ‘unacceptable’ – Heidfeld
Crumbling asphalt has been a regular concern at the Montreal venue, and on Sunday organisers had again laid down a last-minute coating at certain sections – most notably turn 10 – after the surface showed signs of deteriorating ahead of the 2007 race.
"This is definitely not the best circuit for safety," said BMW's Heidfeld, whose teammate Robert Kubica was hospitalised after a huge shunt into concrete barriers.
"But for me the biggest issue is the marbles off the line. I don't think it's acceptable, and I doubt that it is just rubber from the tyres — I think the circuit was breaking loose.
"If that could be rectified for next year that would be a big step. It doesn't sound too difficult to do, at least in theory."
30-year-old Heidfeld speculated that Fernando Alonso "lost pole" on Saturday after slipping on the deteriorating circuit near the Casino hairpin.
He continued: "We have had it numerous times in the last couple of years. Ok, we are the best (drivers) in the world but you only have to go off the line by half a metre and you lose a lot or even crash."
Ferrari's Kimi Raikkonen also made mention of the problem earlier at the Canadian event.
"Hopefully they've fixed it," the Finn, referring to the problems in 2005 and to a lesser extent last year, said on Thursday, "so that we can have a clean race here this time."