Hello @faby,
Here are another Tuning DLC´s:
Wheel Tuning Pack: https://store.steampowered.com/app/388475/Euro_Truck_Simulator_2__Wheel_Tuning_Pack/
HS Shock Tuning Pack: https://store.steampowered.com/app/1209461/Euro_Truck_Simulator_2__HSSchoch_Tuning_Pack/
Here are Interior Accessories Pack:
Cabin Accessories: https://store.steampowered.com/app/388470/Euro_Truck_Simulator_2__Cabin_Accessories/
I think I could Help you. I wish you an nice rest of the Day and enjoy using the DLC´s.
King Regards,
C H E E K I .