Suction cup bike roof rack??.

[tomtaylor1]

Hi All, for my Audi TTs, was considering buying a suction cup bicycle roof rack, to carry only one bike, as no purpose made option appears to be available.

The car has a vinyl wrap fitted to the whole of the car. 

Has any one had any experience of these racks and would it also make a difference having the wrap on the car.

The suction cup bar has three cups at the front and one at the rear.

Thank you in advance.

Tom