Originally Posted by
beng1
You gave zero information about yourself or your bike setup or your current riding speeds, so nobody could legitimately answer your question.
Exactly. Is OP trying to go from 12 to 13 mph, or from 19 to 20 mph? IMHO wheels are probably not going to help, but tires *might* a little. It's usually the engine. Changing the other stuff just increases your pleasure from riding and maybe encourages you to train more.