I ordered these to replace the broken caps I had. I am disappointed that after a week of use I noticed the Union Jack had fallen off. I liked them and they really looked a lot better than the old ones I had here. They were used to cover my valve stems but I wish I could get a $5 pair for them. I would not recommend them to anyone driving their car. They will look good if you only take the car to exhibitions and take them off before the trip. I will update this after testing but I believe all 4 have fallen off. I would also like to say that I drive on paved roads.