Realistic 4x4 Traction System v1.4.0.0

V1.4.0.0
New
- Physical traction prediction (tractors with GPS): compares the required force (slope, rolling resistance, effort from LOWERED implements) with rear axle grip, according to the soil type and ground moisture.
- Front axle engagement by clutch on a ramp (~0.4 s), without jolts.
- Differential lock in 3 positions (Ctrl+K): open / rear / rear + front, with progressive engagement.
- Auto/smart: engages with the implement lowered in the field, when wheels are slipping, downhill with a load and at low speed under load; disengages during tight headland turns and at road speed; remains engaged for at least 6 s (no "flashing on and off").
- Automatic locks while working; they release when turning, braking or above 15 km/h (in all modes, for safety).
- Maximum speed with 4x4 engaged: 25 km/h (tractors/harvesters), 40 km/h (trucks/cars).
- No mode engages 4x4 above 20 km/h, not even with Ctrl+J.
- Tyre pressure (Fendt) follows field/road conditions, like the real VarioGrip.
- New HUD: live wheel slip, padlocks on locked axles and the REASON for each decision;

Fixed
- The terrain prediction remained high (e.g. 27%) simply because a heavy implement was attached, even when lifted.
- Braking activated 4x4 and the locks (wheel slip while braking no longer counted as a lack of traction).
- Multiplayer: Ctrl+J in automatic modes was undone by the dedicated server.
- Semi-automatic mode never disengages on its own (only the player can do so).

REUPLOADING TO OTHER SITES IS PROHIBITED WITHOUT MY CONSENT!!

Multiplayer in development, playable but may contain bugs

Take real control of your tractor’s traction — engage 4x4, lock the differential and let the system react to actual wheel slip, not just to an assigned key.

This mod adds a fully switchable 4x4 traction system to compatible vehicles (tractors, trucks, harvesters, cars): engage/disengage the front axle when needed and toggle a differential lock that trades turning radius for maximum grip in mud, snow or during heavy work.

Features

Real rear-wheel slip detection — automatic modes react to actual wheel-slip physics, not just speed
Four driving modes, assigned to each vehicle by default:
Manual — always in control
Semi-automatic — engages with actual wheel slip, while manual control is always available
Automatic — the same logic, adjusted for vehicles with factory-fitted automatic 4WD (CVT/IVT transmissions)
Intelligent — continuous, proportional engagement in the Fendt style (without abrupt switching on/off)
Native tyre-pressure simulation during engagement — no dependency on any other mod
On-screen HUD with real-time status and adjustable position in the game Settings menu
Zero XML changes to any vehicle — the system integrates automatically into all compatible vehicles