Re: Why does not PML not bring in 125 Convertible?
z4 is bmw's perception and epitome of what a sportster should be. it was born in the american market for the american market and has to at least be up to par with american muscle car in terms of sound. hence, the exhaust system was tuned to provide closeness to american v8s.
the handling is off course due to the tuned suspension and rigidity and tautness of the entire chassis plus light-weight. open-topped cars in general, have liabilities in the overall chassis and prone to scuttles and shakes. partly, due to original design being a coupe and then, chopped off the roof and some strengthening to the chassis to provide stiffness but at the expense of weight.
the z4 was designed and conceptualised as asporster and hence, the entire chassfrom scratch was designed with all these requirements and parameters.
if $$ is not a major issue, go for the z35i = the twin-turbos from the 135 / 335 / 535 / x63.5 and you will be most happy with the overall package.