Toyota eyes Bridgestones

The car giant has not confirmed the move, but Autosport understands that its Japanese bosses are eager that the switch takes place. The change would make commercial sense because the majority of Toyota's road cars are fitted with Bridgestones, and the rubber manufacturer's leading team, Ferrari, would not object to a Toyota deal.

Bridgestone would make no specific comment about Toyota, but a spokeswoman said: "We would be delighted to be approached by any strong team, but it is not appropriate to discuss this matter at this time."

Sauber, meanwhile, has been keen on a switch to Michelin for some time, but the French manufacturer does not have the capacity to supply another team, as it already equips 60 percent of the grid. Should Toyota switch, however, it would most likely take its place.

"Bridgestone has made some considerable strides since the beginning of the season, particularly in terms of consistency," said team principal Peter Sauber. "However, when it comes to a fast lap, which determines grid positions, we continue to have clear disadvantages compared to our competitors."