Determine your base class before you register. If you need assistance, contact the registrar.
NCR classes have changed again this year and are different than other regions, so be sure to check your class before registering.
License - Every driver must be at least 18 years of age and hold a valid driver's license. Note we can no longer allow participants under 18.
Helmet - A helmet with a Snell Memorial Foundation 2010 or newer approval (SA, M or K) is required.
Please read the NCR Autocross Rules on the NCR website.
All Porsche Street classes require tires with a treadwear rating of 180 or higher even if the your Porsche came with lower treadwear rated tires from the factory.
If you need assistance, contact the registrar.

NCR Porsche Street Classes

All Porsches qualified for NCR Street Category and/or SCCA Street Category are classified by the base classes from the following chart. Your need to know your Base Class to register. Base classes are automatically assigned to a Competition Class which is scored using PAX handicaps for the base classes.

Base Class	Models in Class	Competition Class
1	924 S, 924 Turbo	PS2
1	944 (8v), non-Turbo	PS2
2	911 (1965-94 exc Turbo)	PS2
2	914 (all)	PS2
2	928 (all)	PS2
2	944 S, S2, Turbo	PS2
2	968	PS2
2	Boxster, Boxster S (986:1997-04)	PS2
2	Panamera (all)	PS2
3	911 (993:1995-98)	PS3
3	911 (996:1999-04)	PS3
3	Boxster, Cayman (987:2005-12)	PS3
3	Boxster S, RS, Cayman S (987.1:2005-08)	PS3
3	Boxster, Cayman (981:2013-16)	PS3
3	Cayenne (all)	PS3
3	Macan (all)	PS3
4	911, 911 S, GTS (997:2005-11)	PS4
4	Boxster S, Spyder (987.2:2009-12)	PS4
4	Cayman S, R (987.2:2009-12)	PS4
4	Boxster S, GTS (981:2013-16)	PS4
4	Cayman S, GTS (981:2013-16)	PS4
4	718 Boxster, 718 Cayman (2017-on)	PS4
4	718 Boxster S, GTS (2017-on exc 4.0)	PS4
4	718 Cayman S, GTS (2017-on exc 4.0)	PS4
5	911, 911 S (2012-on)	PS5
5	911 GT3, GT3 RS (996, 997)	PS5
5	911 GTS, 911 R, GT3 (991:2012-19; except GT3 RS)	PS5
5	911 Turbo (all; except 2020-on)	PS5
5	911 Turbo S (all; except 2012-on)	PS5
5	718 Boxster/Cayman GTS 4.0	PS5
5	Boxster Spyder (981:2015-on)	PS5
5	Cayman GT4 (except Clubsport)	PS5
5	Taycan (all)	PS5
6	911 GT3 RS (991:2012-19)	PS5
6	911 GT3 RS, Turbo S (991:2012-19)	PS5
6	911 Turbo, Turbo S, GT3, GT3RS (992:2020-on)	PS5
6	911 GT2 (all)	PS5

NCR Porsche Race Class

All Porsche automobiles with race tires as well as those not qualified for NCR Street Category are classified to a base class according to SCCA rules. These base classes are combined into one NCR Race Class scored using PAX handicaps. Unofficial Solo Car Classifier

NCR Non-Porsche Classes

All non-Porsche automobiles are classified according to SCCA rules into base classes. These base classes are combined into competition classes scored using PAX handicaps. Unofficial Solo Car Classifier