Turkish GP race report Photos from Istanbul

The Williams driver, a lap down on Ferrari's world champion, claimed he turned in on him in the braking area.

"I think he was out of order," he said. "Michael was incredibly slow. I was a lot quicker and wanted to get through."

But Schumacher countered: "I don't think it makes sense to do that in that position, being one lap down. You are never going to make up that lap."

The incident between the two men happened at the end of the back straight.

Schumacher covered the inside line as the team men approached the corner.

As Webber moved to the outside, suggesting he was to take the conventional racing line into the corner, Schumacher also moved that way, only for the Australian to make a late jink to the inside in an attempt to get past.

He was far enough alongside as they headed into the corner to expect Schumacher to give him room, but the Ferrari driver turned in regardless.

Webber claimed that all of F1's drivers have agreed not to move across in the braking area because "it is not sportsman-like".

He added: "When he started to do that I wasn't that worried about making contact at the end."

Schumacher maintained his innocence, saying: "I started to brake and I couldn't see him, I didn't know where he was, and going into the corner I got a bang in the rear.

"I would suspect he was not really next to me, but I have to watch the video."

Webber, already trailing because of an earlier puncture, retired after completing 38 laps following a second tyre failure.

His team-mate Nick Heidfeld also had two tyre deflations.

Germany's Schumacher carried on after the incident on lap 14.

But he was put out of contention by a poor pitstop to repair the damage and also suffered power-steering problems before quitting.