Hydraulic Disc Brakes
Shimano Ice Tech Rotors
This is the front rotor. I have 300 miles on it.
The rear Rotor is wearing a little smother but the front one is not wearing in very smooth
Is this wear pattern normal for them for a while ?
To me, it looks OK. Keep in mind that those cutouts will wear a bit differently, due to being site-hardened by the process of making the cutout (most likely stamping, but maybe an EDM process), as will the edges. As long as the areas showing less or no wear correspond with the contours of the disc, things are OK. If you start getting radial lines, or 'corrugated' wear, THEN you have a problem.
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