Sometime back I purchased and installed Velocity Rim Plugs like those to the left in wheels on 3 of my bikes. On my Trek Project One, the spoke hole was just a bit larger than the plug. I used a dab of glue to ensure the plug remained in place. Over time, they seemed to shift a bit, exposing a portion of the spoke hole. I imagine the shift occurred as a result of centrifugal force because of the shift pattern of ever other plug being either left or right of the wheel center. Recently, I’ve flatted and find no apparent reason other than an internal puncture base on force against the tube. I’m riding at better than 140 PSI in a tire capable of 160 PSI. I think the flats were caused by the rim, thus its time to reinstall my rim tape.

I think the plugs are OK, just ensure you have a tight fit; otherwise, continue to use your rim tape.