We only run three classes as there are only 25-35 cars per event.
Find Your Base Car Class
In order to compete, you must properly class your vehicle.
First, find your car in the SCCA Street Category (for example: SS, AS, BS, CS, DS, ES, FS, GS, HS).
Second, use the chart below to take your SCCA class and convert it into one of the 3 TBAC classes (for example: A, B or C). This is now your TBAC Base Class.
SCCA TBAC
SS A
AS A
BS A
CS B
DS B
ES C+
FS B
GS C+
HS C
Note: a (+) indicates you receive 12 base modification points off the bat.
4. Complete the Car Classing Worksheet
Now that you have your TBAC Base Class, you receive 'modification points' based on how your car has been altered from factory. Go down the list and total all your mod points to get your Final TBAC Class. If you started in C+, don't forget to add your 12 base points. For every 25 points, move up one class (for example, if you started in B Class and have 29 points you are now in A Class).
Fill out the Car Classing Worksheet and bring it to the event.