Just installed these tires today. So far I've been able to experience dry and wet conditions. Please note: I put in Average for my driving style as that is how I drive most of the time with the occasional Drive crazy blast, which most people would consider to be A LOT more than spirited.
First thing I noticed is how smooth the ride felt. Nice and smooth all the way up to speeds well above the posted limit on the freeway.
Second is noise. These tires aren't as quiet as I was hoping they'd be. They're still audible inside the car but they're not annoyingly loud (my E55 is SUPER quiet inside). However, given the size of the tires (245/40/18 Fr, 275/35/18 Rr)and how tight the suspension is, it is to be expected that there will be some road noise.
Third is dry traction. Dry traction is good overall. The traction control only kicks on when going over the stop line at a light. Other than that, no surprises.
Dry cornering is also very good. The tires feel like there's some give in the sidewall, so they're not quite as responsive as I'd like, however, it's very predictable. I'm sure pumping these things up more would firm them up. Dry stopping is also phenomenal.
Finally --wet traction. Wet traction is, for the most part, very good. Braking is excellent, even hard braking in the rain didn't activate the ABS. Wet cornering is very good overall. Definitely very confidence inspiring when driving in the rain on curvy roads.
The ONLY gripe I have with these tires is wet acceleration. From a dead stop, with slightly less than half throttle, the traction control was on the whole time until I reached the speed limit (55 MPH). However, given the torque output of the car (400 ft./lbs), I doubt there's a tire that could keep traction in the rain.
So far these seem to be great tires for the money. I'll post a follow up after I get another 1000 miles on them.