I did purchase and receive few weeks ago some 50 deep with 26IW with CX ray spokes with R248 hub in UD paintless.
They weight 1250g and feel very light on the bike.
Unfortunately, since I mounted this new wheels I'm experiencing a problem with my front brake (Ultegra 8170Di2 on a Lightcarbon LCR018 frame).
My front brake is sometime making a loud metallic noise while braking (not necessary on strong braking). This never happen before mounting these new wheels.
What is also strange is that it's sporadic : on some ride, I don't have noise for 2 first hours and then it start.
I did few trials to identify the origine of this noise and it seems to be related with the front wheel.
When I put back my old wheel (reinstalling the same disk) I have no problem.
I did try to install a new disk and new pads without solving the issue.
I did also try to use new resin pad (instead of metallic pad) + other disc without resolving the issue.
The disk is tightened with a torquewrench at the right torque (40Nm).
Do any of you experience this issue ?
I don’t really understand what could cause this : do you have an idea ?
I will also continue to try making other test (maybe test them on my other bike).
I'm not feeling vibration while I'm braking but the noise is realy not nice and I'm not confident going downhill with this phenomenon.

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