I was running my stock wheel setup (some Pirelli runflats I believe) with the pressure up to 3.5bar on the rears. I have the stock open diff and will now be looking for an LSD
I was able to maintain a single high speed drift for a long time as well. I was really very pleased with how the car handles in drifts.
Also, as you can see, the track was kept wet for easier (lower speed) drifts and low tyre usage