The regulations are designed to be as free as possible whilst still encouraging close racing. To be eligible the car must comply fully with one of the four classes as specified in the Rules and Regulations of NZ Sports Car Racing Inc.
NB: Below is a basic guide only of the classes provided, for complete class specifications please click on members info tab.

1. ClubSport:
a) For cars that run on DOT approved road tyres and are in road going trim
b) Registered and capable of obtaining a WOF (does not have to be current) with a maximum engine size of 2 Litre.
c) Forced induction cars limited to 1600cc supercharged and existing cars only, no Turbos permitted.
d) Must comply with all other general club rules, including those not specific to this class and is also subject to the performance index.

2. ClubSport 'Open':
a) Same basic rules as ClubSport Class with the exception of the following:
b) Cars are permitted to run Slick Tyres
c) Aerodynamics such as Rear Wing, Front Splitter and Diffusers are permitted
d) Maximum Engine size permitted, is 2 litre
e) Forced induction cars limited to 1600cc supercharged and existing cars only, no Turbos permitted.
f) Must comply with all other general club rules, including those not specific to this class and is also subject to the performance index.


2. ProSport:
a) Engine limited to 2 litre piston and 13B non peripheral port rotary naturally aspirated engines
b) Turbos permitted but are restricted to 7.5lb boost, this restriction can be increased or decreased at NZSCR Club's discretion.
b) Must comply with all other general club rules and subject to the performance index.

3. SuperSport:
a) General- For cars which do not comply with the first three categories for any reason, but are still within the spirit of the regulations.
b) Must comply with all other general club rules and are subject to the performance index.
c) All forced induction engine cars are permitted in this class

Acceptance - The NZSCR committee reserves the right to exclude a car from the NZSCR series for failure to comply with any of these clauses.

Changing classes:
a) Changing classes during a season will result in points from the class departed being removed, and points in the new class will start from scratch.
b) Eligibility - If a person wishes to compete and their car falls outside of any of these rules, an application can be made to the Committee for dispensation.


PERFORMANCE INDEX:

1) Description:
As the NZSCR Series is intended to promote close racing, engineering innovations, and to encourage new competitors to participate, an ‘index of performance’ has been created.

2) Criteria:
This is primarily to prevent any single car or cars performing above a threshold that reduces the competitiveness of those others competing. This is set at an average of a maximum of 2.0% faster than the next slowest competitor across all the race tracks that NZSCR competes at.
This is monitored by the NZSCR committee.

NB: Should a competitor fall outside of this criteria at 2 or more races, then the NZSCR committee will enforce the following procedure:
a. The driver of the fastest car will be asked to slow to an average lap time below the threshold.
b. If the driver fails to comply with (a), they may be excluded by the NZSCR organisers or promoted to a faster class.

3) Clubsport Class:
The Clubsport Class is subject to the following minimum allowable lap times. Any car competing in this class that exceeds this time in 2 or more races at any circuit will be penalized 150% of the breakout differential in subsequent races on that circuit.
The driver has the option of transferring to the Clubsport Open class in lieu of this penalty but will not carry forward any points earned prior to the offence.

ClubSport Minimum Break Out Lap Times:
Pukekohe 1:08min
Taupo 1:42.5min
Manfeild 1:17.5min
Hampton Downs 1:14.5min