: Increased tyre material roughness to reduce sliding in wet conditions.

: Set to 0% – 25% (higher settings will override the mod's realistic physics). Trailer Stability : Set to 0% – 10% .

The 6.4.x series introduced significant changes to how the truck interacts with the road and the cabin moves:

: Open the Mod Manager in the ETS2 main menu and enable "Revamped Dynamic Suspension".