Are 15 inch wheels any better than fourteen inch wheels?

size is the problem, nobody makes a decent 225-70 or 235-70x14 anymore. besides, these cars had tall tires in the day. 26-27 inches normally.not 24-25. I use 15's because I want the height, and the new disc brake rotors/calipers are too big for a 14 inch wheel.
I think I have the last set of nice Michelin 225/75-14 tires left on the planet. and I bought them in 2005.