It's S55 versus S55, as the BMW M2 Competition takes on its bigger brother, the M4 Competition in this CarWow test. Both have the same 3.0-litre twin-turbocharged inline-six under the hood, and while both produce the 550nm, the M2 Competiton makes 302kw compared to the M4 Competition which outputs 331kw. Interestingly, in South African specification, the M4 Competition tips the scales at 1,537kgs, whereas the smaller M2 Competition weighs in at 1,575kgs. Can the wet track give the M2 Competition