I think the Nav is very easy to use. It literally took me minutes to figure it out. My dealer let me take the X for a solo test drive and by the time I returned, I had the Nav system figured out. As far as upgrades, my service advisor and my tech are really cool. I get all the latest downloads for nothing. IMO, anyone that can't figure out the Nav system in a
X5, deserves to get lost!!!

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2011.5 Dinan ///M3:
SSII DCT
Competition Pkg
Convenience Pkg
Premium Pkg 2
Heated Seats
Enhanced Premium Sound
Black Kidney Grills
BMW M Performance Steering Wheel
BMW Carbon Fiber Performance Spoiler
BMW Aluminum Pedals
Dinan Exhaust
Dinan Mid-Exhaust (x-pipe)
Dinan Carbon Fiber Intake
Dinan Performance Tune
Dinan Pulley Kit
Dinan CH-R Wheels
Dinan Carbon Fiber Strut Tower Braces
Arkym Front Lip
Carbon Reflectors
Lux H8 V3
Brembo 365mm BBK