What This Mod Does:

This mod takes the best of Physics mods for ATS and combines them, and adds support for modded trucks. It also adds mod truck support for unlimited camera mods. (mod is still necessary for some default trucks. Files are included, but some trucks are missing.)

This mod also changes the default FFB LUTs for Logitech G and Driving Force wheels to improve the FFB (Serves as a pseudo FFB fix). Honestly, as much as this is an improvement, I recommend the FFB Plugin found here: 

(https://forum.scssoft.com/viewtopic.php?t=49772)

If you use MOMO's steering, disable that and enable this, as it will overwrite this mod & visa versa. This mod adjusts the same value so if you like that mod this should work for you all the same.

This mod also adjusts the clutch function in game. Double clutching should be much easier now, and you should be less likely to grind when double clutching. Eventually, I plan on creating a version that goes through and mutes the transmission grinding sounds for default and sound mods, and modded transmissions, but that is a toll order and will take an obscene amount of time. This was tested with synchronized shifting at 0 (off).

The other thing this mod does is produce more natural wear and tear on the chassis and other parts, which is a feature that was planned for a few separate physics mods, that never came to be.

Requirements (All on Steam):

This mod requires FRKN64's Realistic Physics, Eddie Yantz's ATS Physics Tweak (Dry Surfaces), and and Air Seat mod. Any other mods that modify chassis files or physics.sii should be below this in the load order for the changes in these mods to function.

FRKN64's Realistic Physics:

https://steamcommunity.com/sharedfiles/filedetails/?id=2254213086

ATS Physics Tweak (Dry Surfaces:

https://steamcommunity.com/sharedfiles/filedetails/?id=1814180686

AirSeat Ride:

https://steamcommunity.com/sharedfiles/filedetails/?id=1815419676

Recommended Settings:

All Stability Sliders: 0

Cabin Suspension: 0-25

Suspension Stiffness: 78

Driveshaft Torque: 100

Steering & Controls:

Below is the steering configuration I recommend using. I spent weeks working on getting the steering just right, as an IRL trucker. I've use the information in this post to make the changes, which explains how it all works.

(https://www.reddit.com/r/trucksim/comments/4a1gbu/people_with_steering_wheels_take_a_look_at_this/)

I Highly recommend using my files, or playing around with yours as described in the post above. As a trucker IRL, the default steering calculation is far too sensitive. It's still not perfect. IRL the steering cannot respond instantly to input, the way it does ingame. If you look at video, you'll see many tuckers making large, brief inputs, but not getting abrupt motions in return. This is because the input is translated through the steering box, and then through to the rack. This not only introduces a slight delay, but also dampens the effect of inputs. IRL, to maintain a straight line, with the wind, uneven road surface, other trucks etc. around, you have to make large enough corrections on the wheel to get an appropriate reaction from the wheels as they are on the tarmac. In ATS however, any input you give it is translated through the system to the wheels directly. I have tried my best to mimic the effect I spoke about, with what I could find online, and knew how to do. I've driven Cascadia's, T680's, a T880, VNL's, 579's, and a Mack IRL. I've tried to get to a close approximation of how they feel, but as I said, it's still sensitive and not perfect.

Steering Config Line:

There have been a few changes to some things in the game that can affect how the steering will feel. My current settings are:

"mix steering `dsteering - (0.32 * normalize(abs(j_steer?0), c_steer_dz) + (0.68 * (c_steer_func / 2)) * pow(normalize(abs(j_steer?0), c_steer_dz), 1.75)) * sign(sel(c_jisteer, -j_steer?0, j_steer?0))`"

So long as the total equals 1.00, you're good. I would say that 0.68 is the most realistic, as far as the actual rack ratio through the box is concerned. This would look like:

"mix steering `dsteering - (0.32 * normalize(abs(j_steer?0), c_steer_dz) + (0.68 * (c_steer_func / 2)) * pow(normalize(abs(j_steer?0), c_steer_dz), 1.75)) * sign(sel(c_jisteer, -j_steer?0, j_steer?0))`"

There is seemingly more "play" through the steering in 1.50/1.51/1.52, so a more realistic ratio will feel more correct.

For that "delay" feeling, I recommend setting the sensitivity or steering speed within your wheel's driver/settings to around half of normal. For the G29, that's 25% if you have it default, or 50% if you run 100%.

My wheel is typically set between 25% and 40% depending on my truck. This will change the initial steering ratio for the first 15-20 degrees of steering. Until SCS actually implement realistic steering, this is the best that can be done, as far as I know. I don't recommend using the in-game sensitivity slider. This will introduce a complete ratio change, and may even create a deadzone.

Load Order:

-Air Ride/Camera mod of your choice (Only if you'd like to override Eddie Yantz's mod)

--This Mod

---FRKN64's Realistic Physics

----Eddie Yantz Physics Tweaks

-----Air Ride/Camera mod of your choice (If you'd like the above mods to take priority)

(This mod was originally destined for the Steam Workshop, but I couldn't get the uploader to recognize the dependencies, thank you to truckymods for having a much more reasonable upload system)

Currently Fully Supported Trucks as of 03/16/2026:

Pizzter & Damo - Peterbilt 389 Custom Megapack

Jon Ruda - Pete 389, Pete 579, Pete 362, Kenworth W900, Freightshaker SD, Freightshaker FD/XL, Freightshaker Cascadia

Jasper's W900

Rollin' 389

Dom's Diesel & Chrome - Peterbilt 379

Kishadowalker - International 9300, Mack Superliner, Peterbilt 352, Brockway 761, Mack F700

Faster Modding - DINA/International 9400 Beta, Kenworth T800 '89, Kenworth W900 '90

HFG - Marmon 57P

FLX Mods - Peterbilt 359

Joster91 - Kenworth T660 (Patreon)

Hatreyu - Haterbilt Viper 389, GTM Kenworth T800 Updated

Smarty - Perterbilt 350, Peterbilt 351, Pacific P-500F, Scot A2HD, International Paystar 5070

Harven - Kenworth W990, International HX520, International HX620, Mack-R Series, Freightliner FLB

SgtRox - International 9400i, Kenworth T700

R.Modjeski - Peterbilt 386

guidot - Project 3XX, Edison L Series

Ironwerx - IW900

Boremann's Performance - D3D Kenworth T880, Western Star 6900, Mack Pinnacle/Granite

XBS - Autocar AT.64

RTA Mods - Kenworth K200, CAT CT660

Overfloater/Sherman - Kenworth K100E, International 9300i

Outlaw - Kenworth W900 Classic, Western Star 4900EX

Odd Fellow - International 9800i

Cxrtified Customs - Freightliner FLC

Blade's Shop - Ford LTL 9000

mTG - Peterbilt 281-351, Mack B61

Roadkiks - Ford LTLA 9000 Aeromax

Blueprint Mods - Kenworth Needlenose

Here is a full list of the supported truck def directories as of now, but please be aware that only the trucks listed above are known to be up to date to their latest versions as of 03/16/2026:

389ep

4800w

670vnl

9400i

autocar.at

autocar.dc

bp_granite

bp_vision

bp_ws6900

brockway.ksw

clt.9000

ct660

dina.800.f

dina_9400.f

dk_t880

dom379

f700_ksw

fl.122

ford

ford.9000

fred.122

freight.casca

freight.xl

freightliner.coronado

freightliner.flb

freightliner.flc

freightliner.fld

gmc.white

int9300_ksw

inter.4070a

internat9800

intnational.9600

intnational.9900i

intnational.hx520h

intnational.hx620

intnational.lonestar

intnational.lt

ironwerx.w900

ken104

kenw608

kenw659

kenw909

kenworth.k100

kenworth.k100e_of

kenworth.long

kenworth.needlenose

kenworth.t600

kenworth.t610_gtm

kenworth.t660

kenworth.t660jekich1

kenworth.t680

kenworth.t680ng

kenworth.t680_2022

kenworth.t800.yanred2021

kenworth.t800_gtm

kenworth.t880

kenworth.t900

kenworth.w900

kenworth.w900a

kenworth.w900bb

kenworth.w900b_gtm

kenworth.w990

kw.t800_90

kw.w900jl

kw.w900l

mack.anthem

mack.chu613

mack.rd400

mack.rhpl

marmon.p57

outlaw.359

outlaw.w900

pacific.p500f_scr

pete.jc

pete352.ksw

pete352_ksw

pete362

pete579jr

peter281

peter387

peterbilt.350_scr

peterbilt.351_scr

peterbilt.352

peterbilt.378

peterbilt.386

peterbilt.389

peterbilt.389v2

peterbilt.3xx

peterbilt.567_gtm

peterbilt.579

peterbilt.flx

peterbilt.ng579

peterbilt.pinga

prostar

rezbilt.389

scot.a2hd

superliner.ksw

vnl660_mw

volvo.vhd

volvo.vnl

volvo.vnl.2018

volvo.vnl2018

volvo.vnr

volvo.wia

westernstar.4900

westernstar.5700xe

westernstar.57x

white.64t

If there is a truck you'd like me to add, just let me know and where I can find the truck's def files.

Trucks with encrypted chassis files are not able to be added to the patch. If you'd like these trucks to be included in the mod, reach out to their creators. Many of these trucks require updates for newer game versions, and cannot be driven anyway. At present, there isn't much that can be done about this.

Current Request List:

• Moiza mods trucks - Chassis files locked
• Renenate Trucks - Too many conflicts (May create a separate file, huge time investment with how many mods of his have conflicts in their chassis and tire files)
• Australian Kenworth Pack Updated Chassis - Clean files currently unavailable from safe sources (Some trucks should still work with the mod regardless)
• Hateryu Expansions - Some additional chassis may not have physics mod applied (May create a separate file in the future)

I made this patch because, as a real trucker, I felt that things were just not quite right in certain ways, and I've spent quite a while working on rectifying that. I'm struggling health wise and I've been out of the seat. Trucking is what keeps me sane, so i wanted to bring that experience back home with me as close as I can. Thank you to everyone who made the mods this uses. They did the real work.

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Included now is an optional Game Config file. This file makes changes to mirror FOV and other gamedata related changes. File is completely optional and included for anyone looking for such a thing.

If you're looking for a GPS mod that actually allows you to see far enough up the road, I initially included the beginnings of that along with the gamedata a few days ago. I finally worked out most of the issues, and so that is now available as a complete, standalone mod here:

https://truckymods.io/american-truck-simulator/ui/gps-quality-of-life-improvements-878458