McLaren driver Jenson Button says Pirelli must fix their problems which blighted the British Grand Prix.
Five drivers suffered from tyre failures during the race and Button, who finished the race in thirteenth place, has now called for action.
"If it's happening through low-speed corners then that is bad enough, but it is happening at 300kmh along the backstraight which is very scary," he said.
"It's not just scary for the person driving the car, it's very scary for the person driving behind. The whole tread is coming off the tyre and if that hits you in the head then I don't know what might happen."
"Something has to be done but something was supposed to be done two races ago, that was the reason for the change in construction - for safety, nothing else. We've had five [tyre failures] here in total, including Checo's [Perez] on Saturday. The situation is obvious."