It's fine in the daytime where you can make out all objects... it doesn't necessarily have to be high-def (even though other manu's offer close to it). But at night, it is sometimes impossible to make out shapes. Bottom line is you can't trust it enough at night to even consider the "do not rely solely on camera" warning because you couldn't if you tried.

That coupled with the delayed timing when turning on, it's pretty useless. I'm already 5-10 seconds out of my parking spot before it switches on. Impractical for everyday use. I paid good money to get the tech package despite all the reviews prior... in hopes of a simple retrofit replacement someday.

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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