The @bimmerworld team killing it at Watkins this weekend with SRO. That’s four in a row! Nice work @postinscharlie, and thank you @optimabatteries! . #gttheglen #gt4america #bmw #bmwmotorsport #bimmerworld #optimabatteries #lifelinefireandsafetysystems @lifeline_fire_usa @lifeline.fire #bmwm4 #m4gt4