ATS – Ultra Realistic Truck Physics & Cabin Motion V2.9 - Updated [19-June-2026]

[Kass]

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Experience next-level realism in American Truck Simulator with a complete physics rework designed to deliver true-to-life truck behavior in both dry and wet conditions.

The Ultra Realistic Truck Physics & Cabin Motion Mod is precision-built for keyboard, gamepad, and wheel users, bringing unprecedented immersion, authentic handling, and real truck dynamics to ATS.
Features

Fully supports all Trucks
Realistic suspension stiffness and damping — tuned for air-spring accuracy
Natural chassis sway, body roll, and realistic braking torque
Trailer flex physics via 5th wheel resistance and joint angle tuning
Enhanced cabin pitch, roll, and bounce behavior
Realistic wet road grip loss and braking curves
Adaptive steering for all controller types: keyboard, gamepad, steering wheels
Accurate wheel and cabin mass, clutch torque, and inertia values
Smooth at highway speeds, nuanced at low-speed turns, especially in cities and truck stops
Control Device Support
Keyboard: Linearized steering and damping with speed-based sensitivity
Gamepad: Dynamic responsiveness and center return
Steering Wheel (G29, G923, T300, CSL DD): Realistic force feedback balance and suspension feel

Recommended In-Game Settings (ATS)
Truck Stability: 0%
Trailer Stability: 10–20%
Suspension Stiffness: 25%
Cabin Suspension: 30%
Braking Intensity: 100%
ABS - Anti-Lock Braking System – ON
Uneven Surface Simulation: 100%

Note: If these recommended settings from above aren’t proper for yourself, just feel free to adjust them to your liking

All recommended settings included in mod’s ReadMe file.

Compatibility:

ATS version: 1.60.x and future-ready
Fully supports all trucks including truck mods
100% compatible with: All mods that do not have physics

News / Updates:
✔ Steering: Smoother high-speed control and improved stability
✔ Cabin: Heavier, more natural body motion for US trucks
✔ Brakes: More consistent feel with improved realism
✔ Drivetrain: Refined power delivery and inertia feel
✔ Aero: Stronger highway drag for heavy-haul realism
✔ Seat: Improved air-ride damping and reduced bounce
✔ Interior Camera: More grounded driver view with realistic motion response
✔ Other Tweaks And Improvements

Download V2.x ATS - 1.60.x:
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You can support my work if you want just buy me Kofi:
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Special Thanks to all the supporters.

ETS version - Ultra Realistic Truck Physics & Cabin Motion here:
ETS2 - Ultra Realistic Truck Physics & Cabin Motion

[Hister]

Lowest breaking intensity is 50% - what do you mean by 30%?

[Kass]

@Hister if is 50% obviously can not go down!!!, looks like error when i typed, correct now

[Hister]

Thanx for fixing it. I am now using your physics mod using ekyboard for stering. So far so good. Any elements you want to further improve or are you happy with it as it is?

[Hister]

Tried it now with the 1.55 beta and on WS 49x turning the engine brake on makes the tires screetch in rain. Dunno if that problem existed even before my main game beta update since I wasn't driving with the 49X in rain before.

Regarding the mod's more polished/serious outlook you should provide info on ALL the ingame adjustable settings so all the Truck Physics settings but also Camera settings are explicitely suggested for their values - also write which settings are up to player's personal taste what they should be set to.

[Kass]

Mod updated to V1.1, see first post

[durand338]

Sorry but settings in ReadMe file are not very clear:

FFB 100%? With G29, I can hardly turn the steering wheel !
Stiffness: 75% – 100%, stiffness of which parameter?
Understeer parameter? Not found in ATS
Steering sensitivity how much?
Steering non linearity how much?
Internal friction how much?

[Hister]

Kass, please make a comprehensive info on how the ingame settings should be set u for your mod. As is you have 3 different settings suggested across your site/inside mod description and here on the forum and on top of this you have some settings suggested in wrong decmals/wrong % that the game can't have and also you don't have ALL the game's settings covered.

[Hister]

When I tried to reverse with an old Volvo truck model a 30ton gasoline trailer the truck got stuck, it couldn't reverse. You need to check such situations.

[Kass]

@Hister This does not change anything gears, reverse etc. Could be suspension stiffness!!! maybe if was that well change it.