I was just wondering out of curiosity, as the A5/S5 has a button to apply the handbrake, could one still do a handbrake turn with it (not that i'm planning on doing it) was just wondering?
Aha, there's the problem. most cars have a mechanical e-brake which locks only the rear wheels. Locking all four won't help in a turn.Page 124 of the UK user manual gives some information that may be relevant here. Under the section'emergency braking function', it states "if you pull out and hold the parking brake switch at a road speed above 8 km/h, this will initiate an emergency brake application. The brakes are then applied hydraulically at all four wheels. the effect is the same as an emergency stop (full brake application)".......Plob