Thanks!

Since you brought up XS tires as well I thought I would add to my exp. with them.

Wet tire? negative like chi town said.

Dry, these tires gave me a lot of confidence for HPDE driving. The tires didnt start to drop off until about 4 laps in at Sebring at which point they became very greasy! In comparison to a dot r tire they are not terribly far behind like you might expect but obviously no where near the same level of performance.

The only complaint I had was initial turn in feel seemed to lag ever so slightly.

I coulnt have asked for more out of a street tire in 90 degree heat at that track though.

I have never autox'd with anything other than some v710s which I thought were fantastic but I would imagine the XS would be very good for autox because they seem to get up to temp quickly.