We have one child and two dogs, and definitely need the rooftop carrier for long hauls.
Originally Posted by 1994_RX-7_Tour
Since the X5 has less room than some alternative vehicles (Acura MDX, Audi Q7) I am very happy to have the roof rails - we'll almost certainly need them for a roof cargo device on long road trips (wife, 1 new baby, 3 dogs). A few years ago we had a used Ford Expedition ('99) that was full of volume... but it was ready to be retired after about 80K miles and we have been SUV-less for 3 yrs now.
In the garage:
'09 X5 Sport (Mineral Green) / '12 328iT Sport (Deep Sea Blue)
'06 M3C (Jet Black)
'06 530xiT (Titanium Gray)
'03 325xiT (Topaz)
'02 330i sport (Jet Black)
'01 330i (Jet Black)
'01 Z3 (Topaz)