This latest episode of Car and Driver’s sees evo magazine’s Jethro Bovingdon pit BMW’s M5 and M6 models against each other at Anglesey Circuit in Wales. With two fewer doors and a carbon fibre roof the M6 Coupe is slightly lighter than its family-friendly counterpart, but both make use of the company’s twin-turbocharged 4.4-litre V8 lump developing 412 kW (560 hp) and 680 Nm of torque.