I keep getting a light knocking noise from my rear wheel only when I apply the brakes; there's no issue when the wheel is rolling and the front wheel is fine. I checked the brake pads thinking there might be something stuck but they're in good shape. They're Ksyrium SL wheels and are fairly new so I'm not quite sure what the problem might be. Any ideas?
Take it back to the same shop and ask them explain what is happening.
I intend to once their head mechanic gets back from vacation. I swapped out the Ksyrium SL wheel that's giving me the problem with the Ksyrium Elite wheel on my other bike and it worked fine, and interestingly enough the SL wheel worked just fine on my other bike. I'm at a loss as to what would be causing this only on one bike and not the other, any defects on the braking surface should have been detected on the other bike.