Threw on some worn, 6-yo track rubber I had laying around, turned off TC/VSC and went for a drive. The tires were even less grippy than expected! Rear was sliding out pretty easily around corners. Was getting 0.5-1 s of wheelspin shifting into 2nd. Fun times. One of the rear tires started chunking a bit, but this is just bonus time with these tires anyway, they're nearing end of life.
Also adjusted my coilover ride height about 50 times. Never seems to do what I expect.