13 track days this year (3rd year of ownership). did a lot less track days in my first two years of ownership.
power steering fluid needs to be topped up from time to time. usually check this every 3 or 4 track days.
engine temps get a little warm on the track but never went into limp mode.
changed oem brakes to stoptech BBK this year. running stoptech's oem street performance pads and Ate Blue fluid. have no complaints with this set up so far... seems like the street performance pads are sufficient for my skills at this point in time.
i usually need to add 0.5 qrts of oil in between oil changes. nothing too serious.
getting another set of dedicated track rims next year, probably the ARC-8s
Current: 2013 F10 M5 & 2013 GLK350
997.1 GT3RS (gone)
2009 WRX STI (gone)
e92 M3 (gone)