![AC Schnitzer works over BMW's new 6 Series Gran Coupé [w/video]](https://edgecast-img.yahoo.net/mysterio/api/0B680B870FED6CA3A113B6D0045207C9A0291ECD412C5E4F2B8A6E9B3F000B18/autoblog/resizefill_w1200_h675;quality_85;format_webp;cc_31536000;/https://o.aolcdn.com/images/dims3/GLOB/legacy_thumbnail/800x450/format/jpg/quality/85/http://s.aolcdn.com/commerce/blogcdn/www.autoblog.com/media/2012/07/acschnitzer6grancoup.jpg)
AC Schnitzer works over BMW's new 6 Series Gran Coupé [w/video]
German powerhouse tuner AC Schnitzer has spent some time fettling the new BMW 6 Series Gran Coupé, the result being a 360-horsepower 640i sedan with all the restraint of a Mako shark. The additional grunt adds up to 40 hp for the 640i and 47 hp for the 640d, with said grunt made more finely tuned as it rides on Schnitzer's own spring k
