I have an "Overcamp" tent on top of my VW Bus. It is on a Thule roof rack with rain gutter feet. I am looking into putting it on our P5. I think I remember reading here that Thule's non-rain gutter feet will not fit on a P5 with factory roof rack. The tent weighs 115lbs. Does anyone how much weight the factory roof rack bars hold? More info at on tent at www.loftyshelters.com