Autocross Car Classification

M class = (men and women) All Modified and class A improved cars (see definitions)

A class = ("R" Tires) 930(911 Turbo), 964 (all), 993, 996, 914-6, Boxster (S), and any class B, C, or D car which is improved (see definitions)

B class = ("R" Tires) All 911s up to 1989 (964), any E class car that is "improved"

C class = ("R" Tires) 944T, 944S2, 968, 924T, 914-4 any F class car that is "improved"

D class = ("R" Tires) 912, 924, 944, 356, 924S, all 928 any

E class = (Non "R" Tires) All 911s up to 1989 (964)

F class = (Non "R" Tires) 912, 924, 944, 924S, 914-4, 968, all 928

G class = (Non "R" Tires) 964 (all), 993, 996, Boxster (S)

WA class = Womens all cars in A & B class

WB class = Womens all cars in C & D class

WC class = Womens all cars in E & G

WD class = Womens all cars in F

X class = All Porsche SUVs. If a vehicle is deemed too "high profile" (i.e. top heavy), we reserve the right to eliminate the vehicle from further runs and entry.

EX Class = All non-Porsches run by PCA members, or invited guests (vehicles must be deemed safe by Slalom Master). No points awarded in EX class.

Definition of Improved
Improved, for IRPCA Autocross purposes, includes; massive changes in weight, suspension from a later vehicle (i.e. coilovers on an early 911).

Definition of Modified
Modified, for IRPCA Autocross purposes, includes; Cars that are prepared for POC or PCA Club racing, Cars prepared for other racing series, and all cars not licensed for street use.

Definition of "R" tires
R rated tires, for IRPCA Autocross purposes, includes; Any DOT tire that has a wear rating of 100 or less. Any Non DOT tire will be classed as an "R" tire.

All cars with engine transplants will be considered as the year, make, and model of the engine.

Classification is the responsibility of all drivers. If there are disputes as to the class of a car, the final decision will be made by the Autocross Chair, the Safety Chair, and the Region President.
A car will go through a tech inspection and be classified at the first event that car is run. If any equipment changes to the car are made after that point, it is the duty of the driver to have the car "re-classed", or risk loosing any accumulated points after the changes are made. A driver must attend, and drive in, 4 events to be eligible for season points. After the 4th event, standings for all classes will be available on the IRPCA website. Everyone that gains points for the season is eligible for year in awards. For any driver that changes class during the season, 1 point will be transferred to the new class for each prior event that was attended that season. Full points will not transfer to the new class (i.e. Billy Bob has 24 points in A class, but does modifications to his car that bump him to M class. He would now have 4 points in M class, not 24).