Ive had the 3M invisible bra installed on my GL350 for over a year now and its been on quite a few 1000+ mile road trips and put on over 35k miles in one year and COVERED in bugs and it comes right off. and not a single rock chip as the bra is quite thick but hardly noticeable and its on a white GL. it covers the whole front bumper, the side mirrors as well as 1/3 of the hood and cost around $600 installed. A bit but definitely a great investment!! going on my X5 as well as soon as I pick it up.