Originally Posted by
goingbush
park your defender across a spoon drain so that the axles are fully articulated / crossed up, then try to open and close a door, it wont open close properly, the body is all twisted up. In notmal 4wding the body is flexing all the time (not to that extent but it all adds up) IMO Thats a great reason not to use a roof rack, unless its properley designed to flex. (are any??) The first thing you will notice is the front of the roof above the windscreen will curl up slightly away from the glass on each side, A rivet on the inside pulls out and the seal goes, then eventually you get wet feet when it rains.
I prefer to pull a trailer than load up the roof, you also end up with a whole heap of other issues resulting from raised COG.