Autotechnik has just released details on its latest creation – an even more potent version of the BMW M3 Convertible. The company has managed to tweak the muscular Bavarian V8 to around 500 horsepower thanks to a dash of forced induction – no word on whether it’s a supercharger or a turbo. Two different exhaust systems are available for a vastly different sound, and a KW Variant 3 coilover system gives the car a little meaner stance. Autotechnik also swapped the stock wheels for 20 inch rollers with 10,000 spokes. Something tells me owners will have someone else scrub those things. [Source: BMWBlog]