In September 2006 the “Radio Sport BMW Series” debuted at Pukekohe. Starting as one grid, this “open class” so to speak was made up of many different makes. From Colin Briscoe’s trusty E30, through to Gerry Hodges 635CSI, you could bring almost anything along.
Fast forward to today, and the Open Class is still very diverse. However instead of just the one “open” grid, the series has evolved to three different grids, all with their own different rules and regulations.
Minimum Lap Times
A minimum lap time has been set for ideal conditions at each existing circuit
Group GT: No Minimum Lap Time
Group A: Minimum Lap Times for Group A cars as follows:
Pukekohe (old track, long back straight): 1:01.200
Hampton Downs 1:09.300
Group B: Minimum Lap Times for Group B cars as follows:
Pukekohe (old track, long back straight): 1:05.200
Hampton Downs 1:13.000
Group C: Minimum Lap Times for Group C cars as follows:
Pukekohe (old track, long back straight): 1:09.200
Hampton Downs 1:17.300