Road Racing Classes (non-open wheel)

AMERICAN SEDAN (AS)
Focuses on American production V8 cars with modified suspension and brakes. Example cars include the Ford Mustang, Chevrolet Camaro, Pontiac Firebirds and the Cadillac CTS-V.

B-SPEC (BS)
Small fun to drive sub-compact cars with minimal preparation. The class aims at providing competitive racing at a lower cost. Car modifications are specified and weight penalties are used between the different makes to ensure performance parity. Example cars include the Honda Fit, Mazda 2, Chevrolet Sonic and the Mini Cooper.

E-PRODUCTION (EP)
E-Production is the fastest of the production classes and features racing from classic and contemporary production based sports cars. Example cars include the Datsun 240z, Mazda Miata, Mazda RX-7, Honda S2000, Triumph TR6, Caterham 7 and the BMW Z4.

F-PRODUCTION (FP)
Lots of great sports cars racing here including some older classics. Example cars include the Mazda Miata, Triumph Spitfire, Lotus Super Seven, Lancia Scorpion and the Fiat 124 Spider.

GRAND TOURING 1 (GT1)
Grand Touring 1 is the fastest of the grand touring classes and are closely related to the Trans-Am Series cars. Retired older cars from the Trans-Am Series often end up competing. Example cars include the Porsche GT3 Cup, Chevrolet Corvette and the Ford Mustang.

GRAND TOURING 2 (GT2)
These cars are lighter and have less power than the GT1 cars. Example cars include the Porsche 944, Porsche GT3 Cup, Chevrolet Corvette and the BMW M3.

GRAND TOURING 3 (GT3)
These cars are lighter and have less power than the GT2 cars. Example cars include the Mazda RX-3, Mazda RX-7, Nissan 240Z, Nissan 350Z and the Toyota Celica.

GRAND TOURING LITE (GTL)
These cars are the lightest and least powerful of the Grand Touring classes. Example cars include the Nissan 200SX, Nissan Sentra, Toyota Tercel, Mini Cooper, Honda CRX and the MG Midget

H-PRODUCTION (HP)
Great racing featuring classic production sports cars. HP is the slowest of the production classes and includes example cars such as the Triumph Spitfire, MG Midget, Honda CRX, Honda Civic, Fiat X-1/9, Austin-Healey Sprite and the Volkswagen Golf.

SPEC MIATA (SM)
Various generations of the Mazda Miata with limited and specified modifications. There are restrictors and weight penalties added to various generations to ensure parity in the field. The class has a low cost of entry and lots of close competition making it one of the most popular classes for amateur racing.

SUPER TOURING UNDER (STU)
Features production based vehicles that are mid-level performance cars of 3.2 liters and under. Car models must be newer than 1985. Cars can be front wheel drive, rear wheel drive, naturally aspirated or turbo charged on some models. Engine swaps are also allowed. The class is similar to World Challenge cars providing an avenue for those race cars to compete in club racing. All these opportunities allow for a lot of development and options for car builders and tuners. Examples cars include the Lotus Elise, BMW M3s, Honda Integras and Civics. 

SUPER TOURING LITE (STL)
Similar to STU except these are smaller bore cars of 2.0 liters and under. Examples cars include the Honda Civic, Honda CRX, Honda S2000, Acura Integra, Mazda Miata and the Mazda RX-7.

TOURING 1 (T1)
The fastest of the touring cars including Porsche 996, Accura NSX, Audi R8, BMW E46 M3, Dodge Viper and Nissan GTR.

TOURING 2 (T2)
The Touring Classes (T2-T4) are intended for commonly available recent model production vehicles to race in competition. The cars are grouped  based on performance and allow minimal modification for race preparation. T2 cars include the Acura TL, BMW M235i, Cadillac CTS-V, Chevrolet Corvette, Ford Mustang, Mitsubishi Lancer EVO, Nissan 370Z and Subaru Impreza WRX STi.

TOURING 3 (T3)
Touring 3 (T3) cars include the Audi TTS, BMW SpecE46, Chevrolet Camaro, Ford Focus RS, Honda S2000, Lotus Elise, Mazda MX-5, Nissan 350z, Porsche Boxster and Volkswagen GTI.

TOURING 4 (T4)
Touring 4 (T4) cars include the Acura Integra, Dodge Dart, Honda Civic, Mazda Miata, Mazda RX-8 and Toyota FRS.