The yellow lenses on my front turn signals had faded and become cloudy over time with 112K miles on the odometer. The local BMW of Des Moines (IA) offered to remove them and polish them with added PPF protection. The total cost was $200.00 minus 10% BMWCCA Discount and I do believe that it is even necessary to remove the bumper to accomplish the job! These guys really are great and always extend extra courtesies to me and my Z8. The replacement list price of the turn signals is about $1500 each and available for about $1250 each on line. I could not be happier!