TTD - Tractor Terrain Dynamics
Equipment physics, not dirt mods. No settings - everything works automatically.
What is it?
TTD modifies equipment behavior depending on weather, soil type, humidity, tire wear and tire pressure.
The earth is not a goal, it is a condition. The tractor is the main character. Wet field - less grip. Plowed soil means more resistance. Asphalt - everything is easy. Just like in real life.
What you get:
- The weather affects your work: rain - the field becomes soft, dry - everything is stable
- Physics of changing land type: 17 types from asphalt to plowed field.
- The equipment feels different: tracks, double tires, wide tires - everything makes a difference.
- Transmission works realistically: holds gears under load
- HUD shows moisture, grip and resistance
- Multiplayer: synchronization in code
It is important to understand:
TTD does not add slip on demand. Wheel spin is the result of conditions such as wet fields, worn tires (if UYT is installed), sudden starts or too high a speed. If the tractor is new, the tires are new, the weather is dry, you won’t notice the difference. TTD simply makes physics fair and predictable.
What TTD DOESN'T do:
- No visual clutter
- Not only slows you down
- No random punishments
Compatibility:
- Tire Pressure - tire pressure control in automatic mode.
- UseYourTyres - tire wear affects traction.
- More realistic - for maximum hardcore fun
Everything that happens is the result of your decisions, weather and soil.
The mod archive includes a complete manual with a description of physics and contacts of the author.
What's new:
-Difficulty picker (Easy/Medium/Hard) right in the game settings menu
-Difficulty sticks to your save and syncs in multiplayer - no more random resets
-Public API for other mods (getSharedData, registerIntegration)
-Wheels dig in properly under load with speed-aware sinking
Improvements:
-HUD actually scales now - looks the same on 1080p, 2K, 4K, whatever
-TTD keys show up in the Controls menu so you can rebind them
Bug fixes:
-HUD position saves and restores correctly
-Wheel radius recovery on multiplayer servers
-hitchLiftFactor syncs when clients connect
-Physics cleanup when resetting/deleting vehicles
Other:
Manual — HTML, 3 languages EN/DE/RU https://drive.google.com/file/d/1wxbQOC8sOlJvhRgshQd2EFaD00tbQ9LL/view?usp=drive_link
FS25_useYourTyres listed as dependency
Updated screenshots with HUD icon guide
Moisture:
Global moisture is map-wide, saved separately
Wetting/drying rates vary by ground type
Plowed soil dries slowly, asphalt dries fast
Two-point hitch:
Drawbar raises/lowers in sync with wheel sink
Potholes:
Generated when driving onto a field
Depth depends on terrain (low spots = deeper)
Grow faster on wet ground
Optimization:
Idle vehicles no longer calculated
50+ vehicles = 50 FPS
Saving:
Global moisture saved separately from vehicles
Old saves are compatible
Compatibility:
Removed Variable Tire Pressure - was conflicting with TTD
Removed duplicate configs
TTD v3.1 - What's New
Realistic differential. Your tractor now pulls to one side when one wheel is on soft ground and the other on hard ground. Just like real life - the machine doesn't just spin dumbly, it behaves differently depending on what's under each wheel.
Smarter implement hydraulics. Some implements (Horsch, Maestro) used to lift the tractor when the wheels sank in. Now the hydraulics work in float mode - the implement stays on the ground and the tractor doesn't get jacked up.
Smooth field/road switching. No more jittery physics at the edge of a field. The tractor knows clearly whether it's on a field or on the road.
Trailers and implements don't lose connection. No more crashes when deleting a tractor, and physics updates instantly when you attach or detach.
Performance boost. The mod is lighter now - less CPU load, fewer checks every frame. Your FPS won't suffer.
AI tractors now feel the ground too. Bots sink into plowed soil and slip just like you do. Fair physics for everyone.
Multiplayer support enabled — mod now fully works on dedicated servers
Fixed moisture behavior when game time is paused
Fixed tyre wear synchronization between server and clients
Fixed ground type detection reliability
Fixed manual — all pages now display correctly
HUD: new icon order — moisture, sink, grip, resistance, tyre wear
HUD: sink (wheel sinking) now displayed instead of season
HUD: grey tyre icon "NA UYT" when UYT mod is not active
Physics: ground resistance now depends on wheel sinkage, not directly on moisture
Physics: wheel slip now depends on sinkage, tyre type and tyre wear
Physics: reduced ground resistance for stubble, cultivated stubble, post-harvest and other post-harvest field types
Physics: maximum wheel sinkage increased to 25% (was 20%)
AI: wheel sinking now works when AI is driving
Improved overall network performance
