One of my tires leaks from 32 psi to down below 25 psi in less than a day and it's not due to a drastic temperature change. I took the wheel off to inspect for nails/screws and couldn't find any. The only things that come to mind are
- An existing plug I put in some time ago (after I did have a screw) and
- The bead that goes against the rim could have weakened because I used a deadblow hammer to bang the wheel off the rotor as it was stuck.
Could there be something else? How likely is a plug, that worked well for over a year, to go loose and start leaking? Should I take it to a shop to get it re-beaded?