Great weights, don't waste your time on cheap eBay weights. I own a wheel and tire shop and only use these weights for balancing. The grip is great, they are fully painted and look great. They're so flat you don't have to worry about them hitting calipers or anything like that. If you can't get those weights to stop, chances are you've accumulated brake dust and other road debris. Just take a sanding wheel or sandpaper and sand down the area you want to apply it to, then hit it with brake cleaner.