I just installed them two nights ago so I cannot attest to the longevity. However, the product is great. Just note for Taycan owners, these are only for the front doors (I failed to read that). If you install them on the rear doors, the top of the image will be cut off by the door if you seat them in the door all the way. You have to adjust them a little bit, meaning the assembly will not sit all the way in the door as intended. It appears to be secure enough, but I haven’t tested it extensively...