So I have 5 track days now on my Accelera 651 Sport 255/40/17s from tirestreets.com as well as a few K miles of street driving I'd estimate. I rotated them this time front-to-back. Once set is ~7/32 and the other ~5/32 and they started at 9/32". Nice even wear/no issues. I've landed on hot pressures at ~35 as being ideal so starting them at ~28. At this rate I'll get several more weekends out of them for sure. They weren't even bad on the 2 hour drive home from VIR to Richmond in 38 degree rain being careful. Been happy with them so far as a lower-intermediate skill driver for the price.