Originally Posted by
Barrettscv
I also had a very loud squeal from my KoolStops with Cantilever brakes. In my case, the squeal went away after about 300 miles of riding. My theory is that the new pads and new rims needed bedding and using the bike is the best way to achieve this.
+1
The set I put on my rain bike screamed like a banshee for the first hundred miles. Now at 200 mi they've quieted down quite a bit. One post-rain ride I did seemed to make the most difference. My theory is that ride picked up a lot more sand from the road which helped the bedding process.