I was really surprised that they fit my 2001 Jetta. I found these after looking for replacements for my original caps and they were cheaper than buying an original cap with the VW logo in the middle. For that price I could buy two sets of 4 instead of one cap. The metal ring holding the cap/applying pressure to hold it seems cheap but should hold up well enough. I don't think they should just come off. Already had a few hits and they all stayed in place. Just make sure you place this ring in the direction you want it to move, with a notch inwards (see original caps). I will buy a second set in case they break or fall but like I said I don't expect any problems. In my opinion a very good buy.