That would be a great idea. I mean, I am more than twice as fast on a bike than by foot and I can drive more than 10 times as far. Just imagine what Flash could accomplish with a bike
He has a suit that doesn’t melt to his skin. If his people can make a costume, they can make a bike …. Trying to imagine the precision you’d need on those bearings
I was under the impression he was surrounded by the speed force which drops certain characteristics of physics. Things like friction from wind don't apply to him and I'd guess his suit too?
It would probably depends on what you’re watching or reading. It was a big deal in the show for him to destroy his clothes at the start and then start labs built him the suit that could take it