Williams driver Bruno Senna has cited a difference in tyres as the reason for his crash with Michael Schumacher.
The German was catching Senna down the straight on the 13th lap before smashing into the rear of the Williams car, forcing both drivers to retire from the race.
"Of course he's (Schumacher) not going to say it's his own fault, but at the end of the day he had much newer tyres than me, I was on very old rubber by then, so I guess our braking points were uneven for Turn 1," said Senna.
"I'd already seen [Romain] Grosjean braking very late and hitting me into Turn 1, and I didn't want Michael to do the same.
"When I went to brake, he probably just tried to cross and he hit me, so what can you do?"
Schumacher has been hit with a five-grid penalty following the collision.
