Originally Posted by stealth.pilot
Since you got HPs you should install them like I did. Don't put them behind the grille because it will affect performance. Also recessing them makes your car vulnerable to off axis shots and overpass shots. I will PM you a pic of my placement on the M5. It's hard to notice.
You could put Opti Guard over 3M. However I am extremely impressed with the clarity of the Suntek PPF C. It looks optical grade - I.e. you can't see the film at all. To me this is the best film on the market right now. And it's self healing. They also have a non healing version which you can OptiGuard.
Please shoot me the front and rear install on your new M5. Getting ready to pull the trigger. Thanks
Gottta revisit the Suntek as well. I think Xpel or Suntek is going to be the choice.