VX.... I recently changed all disc pads (front and rear) and front discs with the cheapest pads I could buy new and ended up with squealing from the front that really bothered me so I revisited the front calipers/discs about 10 days later....What I discovered (comparing the old with the new) was that the new pads actually had a slightly wider but noticably longer (about 20mm) surface area of contact with the disc than the old ones . I initially thought the squeal might have something to do with the stainless clips not seating correctly or slide pins ...but my further inspection revealed all was as it should be. It took a month for the new pads to bed in but the squeal is gone and the brakes actually work better in my opinion. They dust up the mag more (probably due to the cheap material but also possibly the longer contact area) but they grab better likely due to the greater surface contact with the disc. I went with the cheapest not because I wanted to save money but because the other set I last installed had a grit coating to speed up the bedding process unfortunately I noticed it also helped wear the disc down to quickly(ended up with a noticeable lip after a few months).... Im thinking the higher grade compound actually caused faster disc wear . I am happy with the cheap set although the bedding in period drove me nuts....lol
If you seriously think that grit stripe on a set of new pads wore your rotors down by any noticable extent you are honestly smoking crack. I mean, why doesn't someone start selling new cutting tips for brake disc lathes. Forget about high speed steel or tungsten carbide, just make them out paint with grit in it and watch the metal disappear.
According to Bendix the grit is titanium dioxide. Whatever it is it will barely scratch the surface. All it does is help the pads bed in quicker. It would have helped speed up the process with your new pads.
Lots of the best brake pads make heaps of black dust. Remsa make make the worst dust but they are a great pad and last for yonks.
