Brake Pad bedding / Rotor deposits

[cjbcpa]

I believe the issue may be the different binding compounds used in the pads from different manufacturers.

This compound will normally work its way off of the pad onto the rotor when you bed them in. Bedding in helps to get it evenly "baked" onto the rotor. Introducing a different brand may be causing that brands compound to react badly with the first creating the deposits. I think dragging the brakes is only adding to the problem. I had this same issue when I was forced to change pads at the track and had to go with what was available in the pro shop.

A good workout with a scotchbrite pad can often remove the residue. May be easier to remove the rotor to do a thorough job.

My solution, leave the track pads on all the time if you are driving it on the street only occasionally. Alternatively, try a street pad from Pagid. They probably use the same or similar compounds.

Hopefully someone else will chime in and tell us if I am talking total smack, but I think this is an accurate diagnosis.

 

CB