just an update, it seems 16" tires are continuing to become more and more rare. i used to run continental extreme contact dw all around, but they have recently discontinued their wider sizes, so now i'm running:
continental extreme contact dw 225/50ZR16 in the front;
Continental*ExtremeContact DW
bf goodrich g-force sport comp-2 255/50ZR16 in the rear;
BFGoodrich*g-Force Sport COMP-2
when the fronts wear out, i'll match them with the bfg 245/50ZR16's for the front.