The thule wing bar thule39s next generation of load bar a textured surface reduces wind noise during travel and with the new trail edge aerodynamic drag is cut and fuel economy is improved all of this is achieved whilst still adhering to the strict testing that thule puts all its products through thule wing bar features the quietest most aerodynamic thule roof bars yet extensively wind tunnel tested in thule39s own bespoke facility offer a 90 reduction in sound energy over t