I've been running 1.25" Specialized Fat Boys on my Bianchi MTB this year and they are great for minimizing weight, rolling resistance and noise compared with a 1.5+" semi-slick. I haven't had any flats yet but I haven't logged enough miles on them to make any claims of their superiority in this regard. A friend of mine uses 1.25 Avocet FasGrips and they seem to be very similar.
Originally posted by JDP
Nice. How do you think they would ride on wet streets?
Wet weather traction is alway lower but these would grip as well as, or better than, a semi-slick of the same size. Manufacturers put small grooves in tires mainly because most people won't buy a bald tire.