Chris Harris Pits A Merc-AMG GT R, A 911 GT3 RS and A BMW M4 GTS Against Each Other

The Porsche 911 GT3 RS has been the king of the fast road track weapon category but a German civil war is brewing. Could the new Mercedes AMG GT R and BMW’s M4 GTS give the Porsche a run for its money? Chris Harris will tell us all about it.