yes


If you explain the problem I can give you a better answer, one that may actually be helpful to you

my cars slide most of the time when i drive over 100 km/h and knowing from my own driving eaven my Peugeot 308 SW can turn normaly at 150.

there is several ways of combating lack of grip, I will try to help you but this post will be lengthy

FWD - try more down force on the drive wheels by adding lips or removing that rear wing (could be you are applying so much force that you are literally lifting the drive wheels off the ground) soften the front rear sway bar to less than 2600 with less on the front than the back -- soften the springs and dampers to a much more pleasing "drivability" setting

RWD - soften the rear springs so when it squats under power there is more grip. Soften the rear sway bars or tighten the front ones. Don't set downforce to 100 F/R as this is just wrong you will want a slightly offset ratio for this depending on engine placement (see weight distribution of the car before setting this) your cars may even have too much suspension stiffness - soften it up

AWD/4X4 - see above and mix them together

There are many other factors why your cars may be handling like they are on ice, but the main causes can be resolved using the above techniques.

Tyres - Rim size - Power - Gearing - Traction Aids - Seats (all these effect your cars handling too)

DO NOT SET EVERYTHING TO MAX - EXPERIMENT

Taking your FWD 308 as an example - the suspension doesn't break your bones when you go over bumps does it? it's not because the 308 is heavier, it's because it uses aerodynamics and suspension to keep the tyres with the optimum contact with the road.


Edit: If you need further help, I will be willing to give it but please give me a rundown of the car your having issue with. i.e. : Power, weight distribution, engine placement, drive type, tyre size, rim size, pictures of the car showing wings/lips/spoilers and aerodynamic profiles/gearing etc......

this will make my help less generalized and much more specific to an actual car -- might even help you with previous/future vehicles.

Hope this helps

Thank you @Mortxiii