Originally Posted by thebishman
Best bet would be to cover an AW M5 with the Xpel Stealth or Premier's Satin Guard product. Probably cheaper also. And yes the whole car would need to be covered.
If you order a matte colour from the factory, cover it in the Xpel Ultimate or another competitive product. Placing a 'matte' film over an already matte painted car would not be necessary.
I had a 2010 R8 V10 in gloss black completely covered by Premier in their Satin Guard; looked like it was painted that way from the factory and stopped traffic it looked so awesome; (imho of course. lol)
From the specs, the satin guard sounds like a much better product.