Never used them but did some reading on them heard one they are harsh riding 2 not the greatest thing in the world for bike rims pretty much the rims have to be over built to withstand the extra pounding from the road.
You might be a cyclist if....
Your bike is worth more than your car.
You put more miles on your bike than your car.
Weather forecasts can be broken down into 2 categories: good biking weather, bad biking weather.
Honey, it's just a bicycle. and i REALLY need it to excercise, and to ride it to work.(hehe)
Someday when I grow up I will probably lose interest in toys with wheels, but until then..