Have you been to the BMW Performance Driving School in South Carolina yet? If not please put it on your bucket list. Automotive Rhythms experienced two days at the schoolâs adult playground with their M vehicles. We matched the 2011 M3 Coupe -- fitted with a 414 hp 4.0 liter V8 -- alongside the AWD X5 M with its 4.4 liter V8 and 555 twin turbocharged horses. Each vehicle was pushed to its respective limits proving why BMW is deserving of repping The Ultimate Driving Machine!