I replaced my belts this week...just counter levered the fan with a big screw driver while turning the 32mm wrench for the fan...you could pull up the belt tensioners with a 16mm socket or pop off the caps on the pulley and use a hex socket (not sure of the size)...its not that bad...dealer wanted $185 to replace belts..it ended up costing me like 40 bucks (a/c and drive belt) with CCA discount!

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2010 BMW X5 ///M
Silverstone Metallic
Black/Black Merino with Black Piano Trim
Premium Sound
Driver Assistance
Comfort Access
High Gloss Roof Rails

Gone but not forgotten: Upgraded!
2003 BMW X5 3.0i
Titanium Silver
Navigation
Cold Weather Package
Premium Package
Heated Steering Wheel
20" wheels (275/45/R20 all around)
Supersprint Magnum Exhaust
AFE Cold Air Intake
Bimmian Chrome Guage Rings
What's A Resonator?