It has been confirmed that the long-awaited BMW M4 Convertible will debut at the upcoming Goodwood Festival of Speed 2014 in late June this year. This confirmation follows on from previous reports that the drop-top M4 could in fact debut at the New York Auto Show next month. It is currently unknown if BMW will take the new M4 Convertible up the famous hillclimb for a high speed run.
Differentiating the BMW M4 Convertible from the coupe will obviously be its folding hardtop. However, the car will likely lose much of its driving dynamics and handling due to a possible weight rise of around 300 kg bringing the total figure well above the 1,497 kg kerb weight of the coupe.
Under the hood, expect it to remain identical to the coupe. As a result, it will feature a twin-turbocharged six-cylinder engine revving to 7,600 rpm and producing an impressive 431 hp between 5,390 rpm and 7,000 rpm and 406 lb-ft of torque from a low 1,800 rpm to 5,390rpm. That torque figure is available across a broad rev range and is an improvement over the outgoing BMW E92 M3 of 40 per cent.
When fitted inside the M4 coupe, this powertrain helps rocket the German sports car to 100 km/h in just 4.1 seconds with the optional seven-speed M double clutch transmission. Expect a similar, but possibly slightly slower, acceleration time for BMW M4 Convertible.