Thank you Android! Cleared my doubts!

I heard that LFS' cars have all the same aerodynamics, I mean for example the LX4 has the same aero of the Formula BMW or others... Is that true? In that case a big part of the stability of a car is done by tires (I think...).
Any answers?

Thank you very much for you answers. You have cleared my ideas!

Sure, but the Formula BMW has a 6 gear sequential gearbox right? Doesn't the driver shift up and down with paddles? Am I saying rubbish?

Sorry but isn't it strange that you got to release the gas pedal in the Formula BMW car, to shift up the gear?
Maybe I made mistakes setting up my LFS... Please let me know...