Originally Posted By Peter J
Laurie,

I hope they know what they are doing...

Take a look:



Upper pad is the old one, carefully lined up woth the new pad beow, face to face.
The new pads were ordered from the factory via Williams, as you know. So they must be correct?

The new pads hace a slightly lower inner profile, meaning they rub an area of the disk not previously touched by a pad. That means new pad gripping on rust at the lower edge.

We will see what happens on the road!


Same thing on later Trad cars with the Caparo calipers but this time there is an 'overhang' of pad material at the outer edge, this can give a false impression of the amount of pad material left on the brake pad if you have a cursory glance from the fixing end, for a true wear assessment you have to look at the top or bottom of the caliper, changed a pair a few weeks ago that had about 2mm of lip that had never been in contact with a brake disc. It requires a very small amendment to the carrier bracket mounting hole position in production to rectify this so expect it to be solved in about 50 years or so I guess ;-). Easy enough to remove the excess lip if you pop the pads out at major service and face them on a surface plate (or a sheet of plate glass etc) and some course emery paper.

BR Colin
Who used to be a Spanner Juggler