London: McLaren's Jenson Button has criticised teammate Lewis Hamilton for revealing confidential car data on Twitter before Sunday's Belgian Grand Prix in a gaffe that may have helped Formula One rivals.
Button won the race at Spa but British newspapers on Tuesday reported his dismay at the incident.
"We work so hard to improve the car and keep things like that secret and private. I didn't want to see it on Twitter," said Button, whose relationship with Hamilton has hitherto been unusually harmonious for title rivals.
"It was the whole telemetry from qualifying. It wasn't just the rear wing. I was very surprised and disappointed," said the 2009 world champion, who added that the matter was also now behind him.
"I think it's done now. I don't think it's for me to be angry with Lewis. It's not a personal thing," he said.
Hamilton had tweeted telemetry from his car and Button's to show his nearly a million followers the difference between a new rear wing being used by his team mate and the older one he had opted for in qualifying.