The first few laps on a new set can be pretty wiggly and uncomfortable, but then they do well. I'm well into my second set and really like them. Good grip, and good wear/longevity.
When they're new and have tread blocks, they are okay in the wet if necessary. When they've been worn down and are faster in dry conditions, they are NOT to be used in rain.
I typically start the day with them around 31psi, and the pressures will climb to the high 30s/low 40s after each session. I try to keep them around 39psi hot.
IB E90 M3 ZCP returned to BMW FS