Tire update, PS4S at 6mm rear after 5000km from 7.3mm start. So looking like ill get ~20,000 from rears. No tracking and mix of weekday commute and weekend blasts.
Will add pics but I have bought a flex fuel kit for it and now run it on e85 with a little 98 so usually ~e60.
Kit has a small bluetooth control unit and a conductivity probe in the fuel line so adjust fuel mapping based on ethanol content. Apparently worth 20-30 whp.