Driver weight

My driver weighs 94 kg. Will this be an disadvantage or is every car+driver the same weight? If it is, will it affect much?

Ballast is added to the cars to bring them up to a regulated minimum weight (630kg).  So even if you have a very heavy driver, the car will still end up being the same weight overall.  However this game factors in a very small disadvantage for cars with heavy drivers simply because the heavier your driver is, the harder it is to balance the car.

My japanese driver gains 1kg weight after each race, really weird because ou can only decrease 1kg weight with physical training. After some seasons he would be a sumo!

Yes, the weight increase needs to be looked at.  The only way to keep this down is to train physical after every race currently.

Thanks Jack.

What do you have against chubby drivers ? Boooo !!!

Great news, maybe now I can work away some kilos