Nico Rosberg fastest again in the Friday practice but suffered a weird high-speed tyre failure during FP2 for the Belgian GP.
Rosberg posted a quickest lap of one minute 49.385 seconds around the 7.004-kilometre track at Spa-Francorchamps but drew more attention for coming off the circuit at high speed in the second session.
“That was definitely not fun,” Rosberg told the BBC on the walk back to the Mercedes garage. “I think the tyre broke on the rear but I am not sure.
“Let us wait and see but I was at maximum speed so that is not good. There was no debris. I had it happen before in testing.”
Television pictures showed a thread trailing from the right rear tyre earlier on the relevant lap and when it eventually blew off, Rosberg did well to guide his car into the run-off area and avoid the side wall.
Mercedes Technical Director Paddy Lowe, reports Sky Sports’ Ted Kravitz, also suspects that Rosberg’s crash was caused by a tyre failure. But the question remains: was it an isolated incident?