Motor Trend Head 2 Head: 2018 911 GTS vs. BMW M4 CS George Achorn, November 15, 2017February 7, 2018, Review Videos, 2018, 911 GTS, 991.2 GTS, BMW, comparison, Head 2 Head, Jethro Bovingdon, Johnny Lieberman, M4 CS, Motor Trend, 0