Does anyone commonly do any of these at medium/high speeds:
-hit heaved sidewalk slabs (2")
-hit roots growing under trails that cause sudden bumps
-ride over lots of sidewalk / road transitions
-ride over 50 feet of grass or slightly bumpy dirt and gravel
What size tires do you have and how does the Sirrus hold up? Do you get flats or damaged wheels? I'm concerned that it may be too much to do an occasional 32 mile round trip commute that features these kinds of problems along the route.