When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
They get scuffed up over time. I replaced mine several years ago. Just use a sharp edge or small screwdriver and pry off. Remove any remaining adhesive and clean real good, then apply new ones.
I just replaced mine the other day. I used a razor to get the old ones out, then some paint thinner to clean the area underneath of old glue. The new ones had some 3M sticky tape on them so I only had to push them on in the correct position, no glue needed. I wish everything on this car was this easy.