I mistakenly put WD40 for my disc brakes and now pads not anchoring as well as before. Any solution? I heard it wears off after a few rides but it is still not gripping firmly. Is there any solution for this? I also saw using rubbing alcohol. Is that sufficient?
Disc brake pads are very sensitive to contamination. You can clean the disc rotors with rubbing alcohol, but that's about it. Anything else will contaminate the pads.
You may not be able to restore the pads. The easiest and surest thing would be to replace the pads.
If you want to try to restore the pads, get some &quot;drywall sanding screen&quot;, remove the old pads, use the screen to remove the contaminated layer from the pads, and reinstall them.
Make sure to clean the rotors with rubbing alcohol before reinstalling the cleaned pads/installing new pads so no contaminant gets onto the restored/new pads.