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Differentials not working

Forum Overview >> Farming Simulator 25

CategoryFarming Simulator 25
Created28.07.2025 19:41


Herr Löblich (herrloeblich) 28.07.2025 19:41
Hello everyone,

I'm currently struggling with the differential behavior in FS25 and was hoping some of you might have insights or have observed similar issues.

My problem:
The maxSpeedRatio value for the front axle in the vehicle.xml seems to have no effect when steering. Regardless of whether I set the front differential to 1.0 (locked) or 2.0 (open), the wheels always rotate at the exact same different speeds during full steering lock and cruise control at 10 km/h (e.g. 54 rpm outside, 34 rpm inside).
There’s no pushing, skidding, or "dragging" behavior that you'd expect from a locked diff.

Here’s the relevant block from my vehicle.xml:

<differentials>
<differential torqueRatio="0.5" maxSpeedRatio="1.0" wheelIndex1="1" wheelIndex2="2" />
<differential torqueRatio="0.5" maxSpeedRatio="1.0" wheelIndex1="3" wheelIndex2="4" />
<differential torqueRatio="0.5" maxSpeedRatio="1.0" differentialIndex1="1" differentialIndex2="2" />
</differentials>

What I’ve already tested:

- torqueRatio works as expected – I can control power distribution on both axles and the center diff.
- Index structure is correct – the references and hierarchy are valid.
- Config is definitely active – other changes (e.g. removing front and center diff) behave as expected, resulting in a functional RWD layout.

My question:
Has anyone else noticed this behavior? Is this an intentional limitation or oversight in FS25, or am I missing some new setting that controls this behavior? I'd really appreciate any hints, confirmations or suggestions.

Thanks in advance and best regards,
Löbi


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