Audi TT Roadster Design and Function Self-Study Programme 220. The Self-Study Programme provides you with information regarding designs and functions. New! Important!Note! For maintenance and repair work, always refer to the current Technical Literature. Despite the lack of a roof structure, the convertible driver is provided with sufficient protection in the event of a rollover, and a saloon-like survival space is preserved. The conceptual drawback of open-top convertibles is offset in the Audi TT roadster by a highly effective and yet exceedingly aesthetic solution. Two roll bars anchored to the vehicle body and projecting beyond the two head restraints, in combination with the ultra-rigid A pillar / windscreen cross-member combination, afford the vehicle occupants highlymeffective protection even in the event of a rollover. The A pillar comprises a pipe-in-pipe system reinforced with high-tensile steel.In addition, tubular aluminium roll bars adapted from the body contours of the vehicle occupants give the roadster a special, sporty look.As with the Audi TT CoupÃ?©, the alignment bracket set VAS 5020/6 is also used in the Audi TT roadster. In connection with the known gantry gauge VAS 5007, the TT roadster requires alignment bracket set supplement VAS 5007/8. The following locating points are measured: â? Soft top locks at left/right on windscreen frame â? A pillar â? Striker plate mount, B pillar â? Soft top main bearing mount, left/right Correctly positioned on the vehicle body, the locating points ensure an ideal soft top geometry. click here to get Audi TT Roadster Design and Function Self-Study Programme 220.