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Physics Mods V2.5 1.28+ – For Manual Drivers

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Physics Modifications V2.5 for 1.28+ – For Manual Drivers for American Truck Simulator

This is version 2.5 of the physics mod, which is still a work in progress.

Hey everyone, I’ve made some changes to the transmission and suspension to enhance the driving experience.

[UPDATE]: Here are the new features in this version 2.5:

  • – Currently compatible with 4 trucks:
  • Peterbilt 389 SCS
  • Peterbilt 579 SCS
  • Kenworth W900 SCS
  • Kenworth T680 SCS

#For the transmission:

  • – The automatic transmission remains unchanged from the previous update (v2.3).
  • – Next update will focus more on the transmission.
  • – The clutch now engages at a very low point, but it is still easy to operate.
  • – The transmission now has a slight resistance.
  • – The RPM takes longer to decrease. For example, if you are at 1500RPM, it will take more time to reach 1000RPM compared to the stock physics.
  • – More improvements are coming for the transmission.

#For the suspension:

  • – The cabin now moves like a real truck (I don’t know why this feature was deactivated previously).
  • – The cabin suspension currently works with SCS Trucks.
  • – The wheel suspension travel has been increased.
  • – Previously, the trailer and truck were considered as one solid unit, but now the trailer moves independently.
  • – You may notice the cabin moving when turning or driving over uneven terrain.
  • – The wheels can now slip, so be careful.


  • – The tires can now also slip, so be cautious.
  • – This mod is still a work in progress.

The goal of this mod is to transform the physics from the “worst” to a more realistic feel. Although I haven’t personally driven a real truck, I’ve watched numerous YouTube videos to help me create an authentic experience.

It is recommended to use this mod with a steering wheel and clutch pedal, but it can still be used with other controllers. I am open to updating the mod based on your suggestions!

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