[s-cars] Tires for B5 S4

[calvinlc at earthlink.net]

Presently I have BF G KDW-2's on (235/40/18)and the yare great except for 2
things:
1) I have to take advil for trips longer than 30 minutes due to horrible
road noise
2) They are still the weakest link given my H&R coilovers

So my question is: How much difference would there be in dry grip between
these and the Pzero Nero All Seasons?  When looking at some of the lap
tyimes on tire rack it doesn't seem to be tons, but the problem is they are
tested on different days, etc.  The second question is what Ultra High Perf.
summer tire could anybody recommend that is quiet, handles as good as the
KDW-2, and is not going to break the bank?  It really sucks, cuz I have tons
of tread on the KDW-2s but they are so fricking noisy!

--Calvin