I fitted Avid BB7 mechanical disc brakes to my rockhopper. After about 50 - 70 miles, one of the front pads (outer) looks like it only has 1-2mm at most before it gets to the copper coloured metal housing. The inner has a wee bit more but not a lot.
Can anyone tell me if this is normal, ie to have to replace pads after lot less than 100 miles ?
Thanks

