Open Classes

  • Open Classes

Open Classes

Updated on 10 November 2025

In September 2006, the “Radio Sport BMW Series” made its debut at Pukekohe. Starting out as a single open grid, it welcomed a wide range of machinery — from Colin Briscoe’s trusty E30 through to Gerry Hodges’ 635CSI. Back then, you could bring almost anything along and find yourself on the same grid.

Fast forward to today, and the Open Class has retained that spirit of variety, but evolved significantly. What began as one big “open” category has now grown into four distinct classes — GT, A, B, and C. All four run under the same set of rules, but are separated by “break out” lap times, ensuring drivers compete against others with similar pace while still embracing the diversity of cars.

For the upcoming season, the Open C Class will share the track with the 2 Litre and E30 Challenge competitors, creating an exciting mix of grids that emphasizes close, spirited racing. Meanwhile, the GT, A, and B competitors will continue to run together, showcasing the speed and breadth of machinery that defines the Open Class today.

Open Class Regulations A4 preview
Download Regulations Culture Document Penalty Points & Incident Register

Amendment Log

Changes to the regulations will be recorded here as they are approved.

Date Rule Description
10 November 2025 Part One, 8 (d) Minimum footage retention period introduced.
23 September 2025 Part Two, Rule 4.3 (b) (i) Update to Number Box Minimum Height.

Lap Records

To qualify, the lap time must be set in a points-scoring race within a Sprint Championship Round of the Series.

Circuit Driver Time
Hampton Downs (National) Andrew Nugent 1:06.451
Hampton Downs (International) Bob Sievwright 1:43.906
Pukekohe (Long back straight) Andrew Nugent 0:58.793
Pukekohe Andrew Nugent 1:06.259
Manfeild Andrew Nugent 1:08.791
Taupō Andrew Nugent 1:33.119

Meet the Drivers

Open GT

#777 SIEVWRIGHT

#777 SIEVWRIGHT

#777 Bob Sievwright

#777 SIEVWRIGHT

#514 IRVINE

#514 IRVINE

#514 IRVINE

#514 IRVINE

Open A

#3 GRAY

#3 GRAY

#3 Harvey Gray

#3 GRAY

#18 KIRK

#18 KIRK

#18 Kale Kirk

#18 KIRK

#26 FORMAN

#26 FORMAN

#26 Brent Forman

#26 FORMAN

#42 MCCASKIE

#42 MCCASKIE

#42 SCOTT MCCASKIE

#42 MCCASKIE

#62 GARLAND

#62 GARLAND

#62 Murray Garland

#62 GARLAND

#64 WHITBURN

#64 WHITBURN

#64 David Whitburn

#64 WHITBURN

#67 BALL

#67 BALL

#67 Peter Ball

#67 BALL

#73 STUBBS

#73 STUBBS

#73 Matt Stubbs

#73 STUBBS

#93 SELAK

#93 SELAK

#93 Michael Selak

#93 SELAK

#96 MCGREGOR

#96 MCGREGOR

#96 James McGregor

#96 MCGREGOR

#98 NUGENT

#98 NUGENT

#98 Andrew Nugent

#98 NUGENT

#124 PIETERSEN

#124 PIETERSEN

#124 Phil Pietersen

#124 PIETERSEN

#127 SMURTHWAITE

#127 SMURTHWAITE

#127 - Phil Smurthwaite

#127 SMURTHWAITE

#600 COX

#600 COX

#600 David Cox

#600 COX

#626 DOW

#626 DOW

#626 Travis Dow

#626 DOW

#811 SHARP

#811 SHARP

#811 Andrew Sharp

#811 SHARP

Open B

#6 KIRK-BURNNAND

#6 KIRK-BURNNAND

#6 Barry Kirk-Burnnand

#6 KIRK-BURNNAND

#52 GLASSFORD

#52 GLASSFORD

#52 Warren Glassford

#52 GLASSFORD

#70 MAY

#70 MAY

#70 Frank May

#70 MAY

#81 WALKER

#81 WALKER

#81 Andrew Walker

#81 WALKER

#107 SPARG

#107 SPARG

#107 Chris Sparg

#107 SPARG

#136 SMITH

#136 SMITH

#136 Amy Smith

#136 SMITH

#166 CRIGHTON

#166 CRIGHTON

#166 Arran Crighton

#166 CRIGHTON

#167 MITCHELL

#167 MITCHELL

#167 Daryl Mitchell

#167 MITCHELL

#182 HENNEY

#182 HENNEY

#185 Matt Henney

#182 HENNEY

#207 GROOTEN

#207 GROOTEN

#207 Eddie Grooten

#207 GROOTEN

#415 IRVINE

#415 IRVINE

#415 Marty Irvine

#415 IRVINE

#524 LEATHEM

#524 LEATHEM

#524 Todd Leathem

#524 LEATHEM

#700 DONALDSON

#700 DONALDSON

#700 Rick Donaldson

#700 DONALDSON

Open C

#4 KLINAC

#4 KLINAC

#4 Milan Klinac

#4 KLINAC

#29 DUTTON

#29 DUTTON

#29 Greg Dutton

#29 DUTTON

#33 JOHNSON

#33 JOHNSON

#33 Joanne Johnson

#33 JOHNSON

#83 PATTERSON

#83 PATTERSON

#83 Nigel Patterson

#83 PATTERSON

#112 PARRIS

#112 PARRIS

#112 Warren Parris

#112 PARRIS

#525 FREEMAN

#525 FREEMAN

#525 Jimi Freeman

#525 FREEMAN

#123 STOREY

#123 STOREY

#123 Mack Storey

#123 STOREY