Last fall my Griso 11 needed brake pads, and with 100K km there was obvious wear on the discs (Sunstar, 4.5mm thick). I fitted EBC pads, as they are commonly available. After an hour it was obvious that the pads (HH) would not bed into the discs. Spongy lever feel and excessive lever travel. I assumed it was due to an uneven disc surface (they were worn about 70%), so I ordered replacement discs and Ferodo pads here.
Around this time, a Canadian journo named David Booth did some research, having pad problems with a high mileage V-Strom. Replacement EBC pads would drag, while 4 (maybe 5) other common brands he tested would not. He found the EBCs had a slightly larger footprint.
My experience is the same. Had I fitted a different pad, I could have run my discs for many more miles. The EBCs run 1 mm closer to the outer edge of the disc. On my worn discs, the outer edge is still 45 mm thick, while the friction surface is worn down to 4.15 mm. (Wear limit is 4.0 mm).
So the EBC pads will ride on this outer ridge, thus not making proper contact with the friction surface.
Replacement discs were well priced, and I now have great brakes, but buy your replacement pads bearing this in mind.
Around this time, a Canadian journo named David Booth did some research, having pad problems with a high mileage V-Strom. Replacement EBC pads would drag, while 4 (maybe 5) other common brands he tested would not. He found the EBCs had a slightly larger footprint.
My experience is the same. Had I fitted a different pad, I could have run my discs for many more miles. The EBCs run 1 mm closer to the outer edge of the disc. On my worn discs, the outer edge is still 45 mm thick, while the friction surface is worn down to 4.15 mm. (Wear limit is 4.0 mm).
So the EBC pads will ride on this outer ridge, thus not making proper contact with the friction surface.
Replacement discs were well priced, and I now have great brakes, but buy your replacement pads bearing this in mind.