To kind of explain this in simplest terms, there is no perfect setup. It depends subjectively on the driver, and his style of driving. Now, you may hear this possibly 20 times on various youtube videos. It is true, such that I have discovered after a short period of time. I'd used to like fast drifting with the XRG in BL1. I would therefore, drive using an understeering setup, and low angles. I'd get around 100 km/h throughout the corner and 95 on exit.
However, I cannot do that anymore. Through skill fluxes, I've given up race drifting (DO NOT LAUGH AT ME
), and I do a very show life drift through connectiing drifts. Regardless, I need practise. I haven't been on LFS much these days, with the humble amount of homework I have. I can't wait for the new physic updates though!
There is however, reasonable and stupid setups, such that you would probably NOT put an open (no diff.) or a viscous based diff. in the car. You would use a justifiable clutch based setting or locked.
EDIT: I'm probably looking into different tyre compounds on the front and back respecively for different performance and endurance.