Yesterday I changed the front pads. I suspect Canyon had not mounted the calipers very very straight in the factory, so the pads were worn, but not even, and thought it wwas time for some new ones, and time for caliper alignement job. What I did
*after removing the old pads, I very gently tried to push back the pistons. I even put in the yellow piston blocker to be sure the pistons where all the way back;
*Installed the new pads
*Put in the red pad spacer, and squezed the lever a couple of times
*Put the wheel back in. As I have TA's, wheel can only be in the same exact place as before
*Loosened the caliper bolt, squeeze the lever, rebolt the caliper and loose the lever after it.
Result : lots of pads drag, and very little brake lever stroke before the brakes actually begin to brake. Compared to the rear, the difference is huge! When I look at the calipers, I notice there is almost 0 clearance between pads and disc, and this on both sides. After more than a hour of micro shimming, I managed to get the wheel turning 99% rub free, but I do not feel confortable the way it is.
What have I done wrong? Thepads are the same reference aas the old ones, so, that's not the cause.
I did the same thing recently
Changed pads...the new pads rubbed against the discs
Like you I realigned the calliper then bled brake...problem solvedhttps://www.youtube.com/watch?v=gQ_oIAPuQR8
This may help