Did you see the X6 segment on Top Gear last year? They were railing on it (mostly because Clarkson hates BMWs) and in the snow scene, they showed the X6 slip/sliding while trying to go up a very small incline. They also made the mistake of doing a close-up on the spinning tires... it said Sport-Maxx on them... yup the same summer tires we know well.

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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