I have the hard plastic luggage mat and it has saved my trunk carpeting more than I can say. Spills, rough edges on items, just tossing & pulling things around and never worrying about it. Of course the downside is never seeing the nicer carpeting but the utility far outweighs it. I'm sure sponsors here have it, but just to give an idea, it looks like this: http://www.ebay.com/itm/Fitted-Lugga...0e45e1&vxp=mtr

I lucked out and a dealer made a mistake advertising for an E53, so owning up to it he still gave me the E70 one for only $55.

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'08 X5 3.0si - Alpine White / Saddle Brown interior
Specs: Sport Pkg, Premium Pkg, Tech Pkg, Comfort Access, Aero Kit, Style 433 staggered 20s on Conti DWS
Mods: Carbon 35 tint, LED angel eyes, GP Thunder 7500k fogs, H&R 20mm/25mm spacers, clear reflectors, gunsmoke-tinted taillights
Coded: Digital speedo, windows/sunroof/tailgate close via keyfob

X5 pics at Flickr