Car Classing
IMG uses a car classing system known as the Performance Index, which matches cars
of similar capabilities and lap times together for close, competitive racing. If
your car is already built for an existing racing or time trial class, use the class
equivalency table below to quickly and easily identify your IMG performance index.
Class Equivalency Table
Most existing racing and time trial classes map to an IMG Performance Index class.
Use the table below to find out where your race or time trial car fits in our classing
system:
If your car is not currently classed in a particular class or is not listed in the
table below, use the
Custom Car Classification Form.
PI-X
|
NASA
|
German Touring Series U (GTSU)
|
|
NASA
|
Super Touring (ST)
|
|
NASA
|
Time Trial 1 (TT1)
|
|
NASA
|
Time Trial 2 (TT2)
|
|
PCA
|
'06-'09 997 Cup (GTC4)
|
|
PCA
|
'10+ 997 Cup (GTC5)
|
|
PCA
|
993 Cup (GTC2)
|
|
PCA
|
996 Cup (GTC3)
|
PI-1
|
NASA
|
American Iron Extreme (AIX)
|
|
NASA
|
German Touring Series 5 (GTS5)
|
|
NASA
|
Performance Touring A (PTA)
|
|
NASA
|
Time Trial 3 (TT3)
|
|
PCA
|
GTC1
|
|
Spec Cars
|
Thunder Roadster (TR)
|
PI-2
|
NASA
|
American Iron (AI)
|
|
NASA
|
German Touring Series 4 (GTS4)
|
|
NASA
|
Honda Challenge 1 (HC1)
|
|
NASA
|
Performance Touring B (PTB)
|
|
NASA
|
Time Trial B (TTB)
|
|
PCA
|
SP3
|
|
PCA
|
944 SuperCup
|
|
PCA
|
H Stock / Prepared (H)
|
|
PCA
|
I Stock / Prepared (I)
|
|
PCA
|
J Stock / Prepared (J)
|
|
Pro Truck
|
Pro Truck
|
|
SCCA
|
American Sedan (AS)
|
|
SCCA
|
E Production (EP)
|
|
SCCA
|
Touring 1 (T1)
|
|
Spec Cars
|
Panoz GTRA
|
PI-3
|
NASA
|
Camaro-Mustang Challenge (CMC)
|
|
NASA
|
Honda Challenge 2 (HC2)
|
|
NASA
|
Performance Touring C (PTC)
|
|
NASA
|
Time Trial C (TTC)
|
|
PCA
|
E Stock / Prepared (E)
|
|
PCA
|
F Stock / Prepared (F)
|
|
PCA
|
G Stock / Prepared (G)
|
|
SCCA
|
F Production (FP)
|
|
SCCA
|
Improved Touring R (ITR)
|
|
SCCA
|
Spec MX-5 (SM5)
|
|
SCCA
|
Touring 2 (T2)
|
|
Spec Cars
|
Factory Five Roadster (FFR)
|
|
Spec Cars
|
Legends Car (LC)
|
PI-4
|
BMWCCA
|
M3 Touring (M3T)
|
|
BMWCCA
|
Spec E36 (SE36)
|
|
NASA
|
German Touring Series 2 (GTS2)
|
|
NASA
|
Honda Challenge 3 (HC3)
|
|
NASA
|
Performace Touring D (PTD)
|
|
NASA
|
Time Trial D (TTD)
|
|
PCA
|
SP2
|
|
PCA
|
D Stock / Prepared (D)
|
|
PCA
|
Spec Boxster (SPB)
|
|
SCCA
|
Improved Touring S (ITS)
|
|
SCCA
|
Spec Racer Ford (SRF)
|
|
SCCA
|
Touring 3 (T3)
|
PI-5
|
NASA
|
German Touring Series 1 (GTS1)
|
|
NASA
|
Honda Challenge 4 (HC4)
|
|
NASA
|
Performance Touring E (PTE)
|
|
NASA
|
Spec E30 (SE30)
|
|
NASA
|
Time Trial E (TTE)
|
|
PCA
|
944 Cup
|
|
PCA
|
C Stock / Prepared (C)
|
|
SCCA
|
Improved Touring A (ITA)
|
|
SCCA
|
Showroom Stock B (SSB)
|
|
Spec Cars
|
Entropy Sports Racer (ESR)
|
PI-6
|
NASA
|
Honda Challenge 5 (HC5)
|
|
NASA
|
Performance Touring F (PTF)
|
|
NASA
|
Time Trial F (TTF)
|
|
PCA
|
SP1
|
|
PCA
|
B Stock / Prepared (B)
|
|
SCCA
|
Improved Touring B (ITB)
|
|
SCCA
|
Showroom Spec Miata (SSM)
|
|
SCCA
|
Showroom Stock C (SSC)
|
|
SCCA
|
Spec Miata (SM)
|
|
SCCA
|
Spec RX7 (SRX7)
|
|
SCCA
|
Touring 4 (T4)
|
PI-7
|
PCA
|
A Stock / Prepared (A)
|
|
SCCA
|
B-Spec (TCB)
|
|
SCCA
|
Improved Touring C (ITC)
|
ETC
|
NASA
|
German Touring Series 3 (GTS3)
|
Can't find your car class, or is your car not classed?
Click here
Questions?
If you have any questions about classing your car, feel free to email us at
info@imgracing.com.