Got a Mazda 5 2007 Furano, I'm wanting to put a roofbox on. I've looked through the user manual and there are no information as to the maximum weight capability of the roof rails. Does anybody know what the max weight is for the roof rails?

 

Less than 100kg, but your box probably has a 50 or 75kg max limit anyway. I remember reading in the or a manual once. I habve the 2008 sport version in the UK.