I can say I don't normally agree with a lot of things in Consumer Reports, but on the tire test mentioned above I can't argue. I love my Good Year F1 GS D3's. I don't know if they make them in a 16" size useable on a T-bird or not, I kind of doubt it, but if they do, I would highly recommend them.
As for a 1 off set of wheels as you would be talking about with 17 or 18 inch sport wheels, you might get them made for $3000 a wheel if you are lucky, but I don't think you would get them that cheap, especially if you want lefts and rights. If they thought they could mass produce them and sell lots of them, they would be cheaper, but I don't think anyone would see enough of a market for that wheel in our bolt pattern to mass produce them.
Former owner of 94 Bird with DOHC 4.6L swapped from a mark VIII
2011 CTS-V Wagon
1968 Torino was an original 289, C4, fully documented numbers matching car. Now: DOHC 4.6L/T-56 swapped, Cobra intake, IMRC delete, BBK long tubes and H pipe. Dynotech Aluminum Driveshaft, 9" rear with TrueTrac and 4.11's.