Quote Originally Posted by furry-TLR
SO an impact makes a chunk of rubber come off a tyre?

Hmmmmmm....that's a new one I'll make sure I only ride on perfectly smooth roads from now on
Wont matter if you ride on perfectly smooth roads or not, it does not need to be a hard impact, just in the wrong position on the tyre....
Normally things like this happen on the motor way when you hit small bits of debree from other cars

And yes just so we know, an impact can delaminate a section of tyre that can then come clean away from the tyre....we generally see one or two tyres this has happened to a year....and the riders all say the same, it didnt seem a big impact.
And if you had read the bit about his caliper being loose, it was hangin and one bolt missing...