Series

Division I
GT/GTS/IROC - Periods F, G, H1, H2 + I (1962-1981)

Class 11 up to 2500 cc
Class 12 over 2500 ccm up to 3000 ccm
Class 13 over 3000 cc

GT and TW - Periods J1 + J2 (1982 - 1990)

Class 14 up to 2000 cc
Class 15 over 2000 ccm
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Division II

Special production wagon Group 5 - Periods H2 + I (1976-1981)

Class 21 up to 2000 cc
Class 22 over 2000 cc

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Division III

Racing sports cars periods E, F and GR (1947 - 1971)

Class 31 up to 2000 cc
Class 32 over 2000 cc

Racing sports car periods HR + IR (1972 - 1982)

Class 33 up to 2000 cc
Class 34 over 2000 cc

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Division IV

SPORTS 2000 Periods HR, IR + JR (1972-1990)

Class 41 Sports2000

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Division V - Vehicles with V8 engines

GT, TW, TransAm and Nascar, period E, F, G, H1, H2 and I (1947 - 1981)

Class 54 up to 4800 cc
Class 55 over 4800 ccm

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Group 6 sports cars, periods HR + IR (1972-1982)

Class 60 no engine capacity restriction

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Touring cars, period H1, H2 + I (1972 - 1981)

Class 70 up to 2,000 cc
Class 71 over 2,000 cc up to 3,000 cc
Class 72 over 3,000 cc

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Division VIII

CanAm, GR period (1966-1971)

Class 80 up to 2,000 cc
Class 81 over 3,000 cc

CanAm, HR period (1972-1976)

Class 82 up to 2,000 cc
Class 83 over 3,000 cc

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Division IX

Vehicles of the DMSB Group CSC (Classic Sports Cars)

Class C1: Group C vehicles of the Annex J years 1982 to 1984 inclusive
Class C2: Group C Junior vehicles of the Annex J years 1983 and 1984
Class C3: Group C1 vehicles of the Annex J years 1985 to 1989 inclusive
Class C4: Group C2 vehicles of the Annex J years 1985 to 1989 inclusive
Class C5: Group C vehicles of the Annex J years 1990 to 1992 inclusive
Class C6: Group C3 vehicles of the Annex J years 1990 to 1998 inclusive
Class C7: Group CN vehicles of the Annex J years 1993 to 2003 inclusive
Class C8: Group GT1 vehicles of the Annex J years 1993 to 2004 inclusive
Class C9: Group of sports cars of the Annex J years 2001 to 2004 inclusive

Vehicles of the IC period (1982-1990) according to Annex K

Class C10 Sport 2000 cars 1982-1990 (FIA class S2/3)
Class C11 Group C cars 1982-1988 (FIA class GC/1a)
Class C12 Group C cars 1989-1990 (FIA class GC/1b)
Class C13 Group C Junior and C2 cars 1982-1988 (FIA class GC/2a)
Class C14 Group C2 cars 1989-1990 (FIA class GC/2b)

Vehicles of the DMSB groups H, CTC and CGT

Division X
Group CTC and CGT according to DMSB Group CTC and CGT regulations
Group H* according to DMSB Group H regulations*

Class 95: up to 2000cc
Class 96: up to 2300cc
Class 97: up to 2500cc
Class 98: up to 3000cc
Class 98: over 3000cc