If I'm reading that brochure right, it looks like tongue weight exceeds the E70 hitch rating by a couple hundred pounds. I tow a trailer with similar dimensions, but tongue weight is half of that airstream's. Be safe!
2011 X5M Alpine White/Sakhir Orange, Eucalyptus, Spare tire!, Comfort, Soft Close, Tech, Rear Climate, Individual dash, Individual Audio, HUD, DVD, USB, Cold.
2008 X5 4.8i Space Gray/Tobacco, Premium, Sport (includes AD), Active Steering, HUD, Tech, Comfort, Cold, Climate Package, 3rd Row, Prem Audio, running boards, OEM hitch
2005 X5 4.8is
2004 X5 4.4i Sport
2004 X3 3.0i 6MT
Last edited by Rickm5X3; 10-05-2012 at 07:20 PM.