LIKE many BMWs of late, the Z4 roadster polarised opinions when it was launched with its complex but tantalising ‘flame-surface’ design language, questionable run-flat tyres and electric steering. Many believed the Z4 to be a hairdresser’s trade-up of the old Z3. Roll out the Z4 coupe, a stiffer, harder-edged stablemate which is arguably sexier, certainly tougher, and cheaper than its soft-top twin. With a hatch-style rear opening and decent boot space, the Z4 coupe is also more of a ‘pocket grand tourer’ than the storage-compromising Roadster. Of course, sharing the same DNA unfortunately means sharing the same bad genes too.