It is possible that the stiffer sidewall of the new tires is transmitting vibration from warped rotors more than your older tires. A crazy thought, but hey, since everything else checks out with the balancing and alignment, time to go to left field for ideas.
2003 Midnight Blue SE AWD w/VDC
Colgan Bra, Mobil One, JWT POP charger
PAC aux input adapter, hardwired Escort Passport x50, KUDA mount for MP3 player, Porterfield R4S brake pads (now Akebono ProACT), ATE Superblue
Yokohama Envigor (much improved over stock Goodyears)
Lots of squeaks and rattles.