Quote Originally Posted by sho220 View Post
They make slick mtb tires...and it's simple to change gear ratios...and going down stairs is fun...
Slick MTB tires will still weigh more than road tires, and thus be harder to accelerate and to maintain speed on. The wheels are bigger and heavier, too. The more rotating weight you have, the harder it is to go fast. Not saying you can't do it, just that you're working harder if you do.