The BMW Z4 is the aboriginal to appear with a two-piece, electro-hydraulically operated Retractable Hard-Top roof that can be aloft or bargain in 20 seconds. The new auto is additionally the aboriginal agent to be offered with Adaptive M Suspension. Electronically controlled dampers action three altered configurations and lower the ride acme by up to 10mm for a added activating drive. By way of comparison, the Sport+ ambience of the new car is commensurable to the approachable Z4's accepted ride abundance level.