Suspension problem !!

Hi!

I have with some cars (F10 of TDL,... and MP4-25 of Renaultfan) the strange problem, that the suspension is moving while driving. The F10 has the problem that the rear suspension is moving downwards, with the mclaren i have the same problem with the front suspension.
Pictures you can find here: Ferrari F10

Do you have an idea, how I can fix this problem?

THE PIC YOU POSTED SHOW US THE PROBLEM.

the shape is set to near to the track surface.
so with all elevations on track, the suspensions goes down

the suspension does not MOVE, the the whole car goes up and down , depends of track elevations.

all you have to do is move the z position of the car on zmodeler.

Oh sorry I have forgotten to write that id depends of speed. The higher the speed the higher is the downwards movement.

Sorry for my stupid question, but how can I move the z Position of a car in zmodeler?

select the whole car at once,
OBJECTS/MOVE FLAG Z AND UP AND DOWN..Its done

I have tried it now, but this was not the solution for my problem. Do you know another solution if the problem depends on the speed?

Any other solutions? Did anybody of you ever had this problem?