My tires are new too (less than 2K miles on them) and I've had them re-balanced 2 or 3 times to no avail. I don't notice my pass seat vibrating as much as my radar detector, which really gets a ride. On the discounttire website they talk about the difference in dynamic vs static, and it makes sense that what I am experiencing may be corrected by a dynamic balance. I really like not having any weights on the outside, but if that sacrifices ride quality it's really not worth it.

1999 Contour SVT #1966/2760, Silver Frost/Midnight Blue Koni Kit, Mille Miglia MM-S rims, B&M shifter, Stazi mesh, SFCs, optimized Y-pipe & TB, SS break lines, K&N drop-in, Infinity Kappa speakers, MTX amp/sub