These hubcaps are slightly convex which is great for sticking hubcap stickers and the stickers fit great. However, I installed them on my Mazda 6 and expected at least one to be lost due to poor quality. These caps do NOT snap onto the wheels and I actually had to push them down to try and hold them in place. They also had a tendency to push one side deep into the hole so I had to keep trying to push the whole thing evenly to make sure everything was there and tap around them to try and get them to snap into place , which unfortunately seems to be only one. I am very methodical and patient in the ministry and I don't think they will stay. Let's see, hope for the best.