Munich (dpa / tmn) – On longer trips at high speeds, fresh air fans close the top of their convertible better. That’s what the ADAC advises. Because the sound pressure on the ear can be relatively high in open convertibles – 90 decibels and more would result. That’s why doctors warned against longer trips at high speed, according to the auto club.
From 130 km / h, the sound pressure on the ear becomes critical. “Of course, the shape of the convertible as well as windshields and raised side windows reduce the pressure,” said the ADAC.
In addition, the drag coefficient (cw value) is much worse than with the top closed, which can increase consumption. The cause is the turbulence of the air behind the windscreen.