Originally Posted by
Crawfish
I'm certain I don't need a racing one but perhaps a performance or sport model would fit the bill. Are road bikes in this category good for crushed limestone?
Welcome to the forums.
If the crushed limestone road is hard packed then you should be fine and for all practical purposes the same as pavement. It may be a little rougher ride at times due to any washboards that might be present. If the roads have hard packed strips and other strips of semi loose then you will need your wits about you if you need to pull over to the side suddenly or hard braking.
I have ridden 700x23 tires on crushed limestone roads without any noticeable issue other than having to pay a little more attention to what's going on around me in case I have to change / move directions.
If I had to ride on it all the time, I would want to get wider tires, 28 or maybe even larger.