Formula One teams will have to make engines last two weekends and qualify and race with the same tyres next year under proposed changes to the sport.
Mosley has warned speeds have become too fast
The FIA has sent all 10 teams the plans which are designed to make the sport safer by slowing down the cars.
They could impose the measures unless at least eight teams agree satisfactory alternative plans by 6 September.
FIA president Max Mosley has warned speeds have become too fast and there were two recent bad crashes in America.
The teams are expected to agree to the changes to prevent their costs becoming too high.
The proposals cover aerodynamics, tyres and engines with further measures to reduce engine power scheduled for 2006.
On aerodynamics, the FIA proposals include raising the front wing, moving the rear wing element forward and limiting the height of the diffuser.
It estimated that the measures would slow cars through fast corners while having a minimal effect on straight-line speeds.
Tyres will be limited to two sets per driver per weekend,
with one set for Friday and Saturday practice and the other for qualifying and the race - meaning a tyre will have to last for at least 350km rather than 80 at present.
By making engines last for two races power will be reduced.
The FIA said that in 2006 a 2.4 litre V8 engine would
replace the current three litre V10 units.
Teams that cannot obtain a 2.4 litre engine will be allowed to use the old one with power restricted by a rev limiter.
Moves to cut F1 speeds have been welcomed by Britain's Jenson Button, who suffered a horrifying crash at Monaco last year.
"I think they need to put a limit on it because the problem is in two years' time we are going to be lapping circuits four or five seconds
quicker," the BAR star said.
"Every year we are getting quicker. There needs to be a limit on how quick we
can go in the future and I think a lot of drivers feel the same way."