BMW motorsport director Mario Theissen has pleaded with Ferrari to join the other Formula One teams in their agreement to halve testing next season.
Ferrari, winners of the constructors' championship for the last six years, are the only team not to have agreed to have just 24 days testing a year.
"I certainly hope they will join because it absolutely makes sense to restrict testing," said Theissen.
"Restricting testing is a good way to cut costs, that's why we support it."
He admitted that BMW and their partners Williams were not among the teams with the greatest financial worries, but he said excessive testing was wasting money.
We want to see Formula One being a strong and stable racing series in 10 years and to achieve that it has to be worth the money spent
"Covering 80 per cent of the mileage at the test tracks means
hiding the show from the spectators," he said.
"We would certainly not be the first team to run out of
money but it absolutely makes sense and it doesn't make sense to waste money."
Until now, BMW has refused to supply engines to any other teams, but Theissen said it might be a possibility if reduced testing was introduced.
"That would be possible," he said.
"It isn't our intention at the moment but from the capacity side it would become possible."
Theissen also gave an update on the dispute between BMW and the International Automobile
Federation about reducing engine capacity from 2006.
"We are in very intense discussions
this week and probably next week and by then we should know what
to do about it," he said.
Although he said they objected to this proposal, Theissen said his team supported other cost-cutting proposals as good for the sport as a whole.
"We want to see Formula One being a strong and stable racing series in 10 years and to achieve that it has to be worth the money spent," he said.
"And that's why we're absolutely joining the cost-cutting measures."