I owned a set of chains in the early 90's. They worked well on snow and ice. I would say they are mildly dangerous on frozen/cold pavement. They slip and slide abit when you are cornering on pavement. Had to try a few different tires to find a set they worked best with. I didn't have any issues with them interfering with the brakes. I did have clearance issues with the chainstays. They did have a tendency to shift under hard riding and start ticking against the chainstay. I would have to stop and adjust them. I used them for a month or 2 and took them off. Went back to studded tires.