To all of the above, I will add that since my car is primarily a driver, and I do not have unlimited financial resources, when the WWW Allstates that came with my coupe are worn-out ( probably this spring ), I will probably replace them with blackwall tires, simply from an standpoint of economy.
While I would love to go with a set of "authentic" Firestones, I will probably start-out with Universals, at almost half the cost of Firestones.
I like the look of Gary/IA 's coupe, with the straw wheels and WWW tires.
Once again, we all "know" what Henry put on the car at the factory ( and what he had on his own personal Model A: the '29 Special Coupe, which was black on black, with a red belt, black wheels, back tires)...
Tire color is probably the most controversial and also most easily changed / least invasive change one could make to their Ford... it's not like we're talking about chopping 5 inches out of the cabin...
I'm usually a purist, but I seem to take exception to the "rules" when it comes to wheel-color & tire choice for '28-'29 Fords.
That said, if someone is going to represent their Model A as an "authentic" car, as it left the factory, then it should have all the correct factory colors, wheels & tires included.
My 2 cents...