|
Couple of possible causes to evaluate:
1) How heat checked are your rotors? 14 track days is starting to get close to life of the rotors, as the cracks by that point will be enlarging and threatening to make it to the outer edge (potential for a cracked rotor).
2) Are you sure you have 1/2 the pad surface left? The inside pads on and SS 1LE (impossible to see with the wheel in place) tend to wear faster than the outside, and the bottom of the pad (also more difficult to see with the wheel in place) wears faster than the top and becomes tapered. So if you are looking at the outside pad at the top and see 50% of the pad left, the bottom inside pad could well be a lot less than that. If you get down to the backing plate rubbing on the rotor, it can ruin it, which may lead to the noise you are hearing
3) Rock/debris wedged between the pad and rotor. I had this happen to me (ironically right after I had serviced the brakes) and could not believe the awful, metallic, grinding noise it made. Was not easy to dislodge either, but once I got is loose, the noise went away immediately.
4) Warped rotor. Very unlikely. Could be uneven pad deposits, but that type of thing likely wouldn't make the noise right a rock stuck.
|