I used the LFS Advanced Setup Guide to make a setup perfect for me, I noticed that my front right tire ALWAYS locks up when braking, no matter if I'm braking on a straight or turning left/right that 1 tire always locks up, any reason why?

https://drive.google.com/drive/folders/0B-MnhH_70ovEblUzd2RwMmo1YTA?usp=sharing
My setup and the replay is included in the folder. ^

I remember using 840 or 850 brake power in XRG when no ABS ... but u also can turn ABS on.

Oh btw there plenty good setups at https://www.lfs.net/files

in your replay at beginning you drive through grass and get some damage, too.
also you never quite brake in a straight line, always moved the wheel a bit.
i tried with your setup and could not reproduce that.

probably the problem is on the side of the input controller. It is important to have a good wheel and pedals, with mouse/keyboard control you need to have less brake force. And only keyboard control is... Well... Not so good.