BMW is in full swing with its all-new 4 Series, as we have already seen the 4 Series Coupe , a concept version of the M4 and we’ve caught the M4 testing. The one that has remained relatively elusive to date is the M4 Convertible, which will be the replacement for the M3 Convertible.
Well, we can now lay that to rest, as our spy photographers caught the drop-top M4 out testing on public roads.
The details are still pretty sketchy on the entire M4 lineup, but we can tell that the M4 convertible will unsurprisingly have a retractable hard-top and will not stray too awful far from the M4 Coupe’s design language.
What powers the entire M4 line is still a relative unknown, but rumor has it that it will be the same revised 3.0-liter in-line six-cylinder that the M3 Sedan will use. This will peg it at somewhere around 415 horsepower with a 0-to-60 time in the mid-4-second range and a 155 mph top speed.
More details will roll out soon, so stay tuned.
Updated 09/06/2013: Based on the recently announced M4 Coupe Concept, we have prepared a rendering for the upcoming M4 Convertible version. Basically we removed the roof and changed the color, but even so, the new rendering could be helpful to imagine the next M4 Convertible.
Click past the jump to see the spy shots up close and to read more about the M4 Convertible
From the side, it is crystal clear that we are looking at the M4 Convertible, thanks to the aggressive front apron, side skirts and the hard top with joints in it. The biggest difference between this and the coupe model is that Bimmer obviously restyled the trunk lid to house the convertible top.
Around back, the fact that this is an M4 is reassured by the quad trumpets blaring exhaust noise and the cutout in the rear bumper for the diffuser.
The 2014 Audi RS5 Cabriolet features a monster of a 4.2-liter V-8 powerplant that delivers 450 horsepower and 316 pound-feet of torque to all four wheels. This is enough to launch the drop top to 60 mph in just 4.9 seconds and up to a top speed of 174 mph. Unfortunately for Audi, its naturally aspirated format leaves it lacking in the torque department, which leads to significantly slower sprint time when compared to the M4 Convertible.