|Kenper Miller and Dave Cowart gave the Group 4 M1 its WMC debut in 1980's opening round at the Daytona 24 Hours where, running their newly acquired ex-Osella Procar, they unfortunately retired. Despite this early setback, Dieter Quester's lightly modified Procar appeared at Mugello five weeks later and took a fabulous sixth overall for victory in the S2.0+ category, a result that encouraged BMW Motorsport's new competition boss, Dieter Stappert, to make use of a works car later in the season. This factory-backed machine took the Group 4 M1's second win of the year, Hans Stuck and Nelson Piquet dominating at the Nurburgring 1000kms in a stunningly liveried art car that finished third overall. A fourth and fifth in class at Le Mans followed along with a tenth overall at Watkins Glen, Red Lobster's entry being joined by BMW's works car which, like at Le Mans, was finished in Marlboro colours. A third class win for the M1 came at Dijon's 1000km, this in just the G4 BMW's seventh WMC race, a ratio that would improve yet further during the course of 1981 after the car was officially homologated (on December 1st 1980) and accepted into IMSA's GTO category. Seven class wins in eleven World Manufacturer Championship race's followed, Cowart and Miller's Red Lobster outfit taking wins at the Riverside 6 Hours and Mosport 1000kms (both joint IMSA / WMC events), individual victories going to Quester Bavarian Motors (Daytona 24 Hours), BMW Italia (Mugello 6 Hours), BMW Zol-Auto (Monza 1000km), Kurt Konig (Nurburgring 1000km) and Chuck Kendall (Road America 500).