Roof rails facilitate fitment of cross bars for roof carrying. Pre-set positioning points ensure cross bars are fixed in optimum position for weight distribution and dynamics. Maximum payload is 75kg. For panoramic roof. Maximum payload equals the load capacity of the roof mounted accessory. Roof carrying load reduced to 60kg when summer tyres are fitted. Objects placed above the roof mounted satellite antenna may reduce the quality of the signal received by the vehicle and could have a detrimental effect on the navigation and satellite radio systems, if fitted.