I downloaded the game and attempted to set up my Xbox 360 controller. However, I encountered an issue where the brake and gas functions share the same axis (axis 3), and unfortunately, the game does not allow the same axis to be assigned twice. Specifically, the brake input ranges from -1000 to 0, while the gas input ranges from 0 to 1000, both mapped to axis 3. This is standard for the Xbox 360 controller, so i did not change anything. How can I properly configure this controller setup? The Xbox 360 controller is a widely used input device supported by most games.

Oh yeah, thats it. Thanks!
Is it possible to adjust the sensetivity?

You can configure separate axes for brake and gas. There is more than one ways of doing this.

From under 'Devices & Printers' in Windows, you can change the controller driver from 'HID Compliant Device' to Xinput Device. Doing this gives your gamepad an extra Z axis (Z Rotated) by default. But then the controller is rendered useless for games other than LFS.

Instead, like most gamepad users here, it's better to just use the XinputPlus tool. This lets you use your controller as Xinput device without changing its driver. Besides that it has a ton of other features like setting deadzones, sensitivity, FFB to rumble emulation etc.

Quote from Rcod :

Is it possible to adjust the sensetivity?

Yes, for steering, you can just reduce steering max lock of car setup in garage, steering tab. This is much more useful than using non-linear steering by utilizing wheel turn compensation. For example, with XFG at BL1 track you can finish a lap with as little as 12deg, but pit exit and manuvering big mistakes is very tricky. As a starting point, half the max lock then go up from there untill you find good balance between steering precision and steering radius. For linear steering just set wheel turn compensation to 0 (wheel turn then has no effect and you can leave it at any value).

Thanks for the answers.
This XinputPlus tool is pretty nice. Good to know that such tool exists.