Gran Turismo Runoffs?

Inspired by the SCCA Runoffs, imagine if Gran Turismo 5 had something similar to the SCCA Runoffs. For the uninitiated, the SCCA Runoffs is an American competition whereas competitors race a variety of different cars in racing competition. Competition is set to take place between about 40-45 minutes. The big key to the Runoffs? Most of the competitions are GRASSROOTS series. The racing takes place on a proper racing course (meaning, no temporary courses of any kind). There are classes that allow for cars to be tuned of a certain level. You can't max out your car's power and handling characteristics, so there'd have to be a cap on certain levels of tuning. How would you define the different classes? Here is my input...



--- Building the Gran Turismo Runoffs: Events and Classes ---
Classes have to be very decent. There are no pit stops in these races, so the rate of wear of tires and fuel shouldn't compromise with the level of racing. All of these classes are solely based on production cars. It would be too sketchy to come along with proper race cars in this model. Here are some ideas:

* Front/FWD Class. This class is reserved only to front-wheel drive cars. Production cars only requiring Standard/Sports tires.

* Front/RWD Class. This class is reserved only to front-engined, rear-wheel drive cars. Production cars only requiring Standard/Sports tires.

* Mid/RWD Class. This class is reserved only to mid-engined, rear-wheel drive cars. Production cars only requiring Standard/Sports tires.

* 4WD Class. This class is reserved only to four-wheel drive cars (regardless of engine placement). Production cars only requiring Standard/Sports tires.

* American Sedan. This class is reserved to American sedans, and is inspired by the actual American Sedan class in the SCCA. Production cars only, American sedans only, and requires Standard/Sports tires.

* American Muscle Cars. This class is reserved to American muscle cars. It is reserved to mostly classic muscle cars, but also modern muscle cars like the latest Camaro, Mustang, and Challenger. American muscle cars only with Standard/Sports tires required.

* Japanese Sports Cars. This class is reserved to Japanese sports cars, such as the Skyline family (including the latest GT-R), the S2000, the NSX, the Supra, the RX-7, and the like. Japanese sports cars only with Standard/Sports tires only.

* European Sports Cars. This class is reserved mostly to economy and low-level sports cars from Europe. This includes cars from all European nations, and not just relegated to certain nations. European sports cars only with Standard/Sports tires only.

* Showroom Stock. Inspired by the actual SCCA series, the series calls for cars no older than five years. So assuming the game is released in 2010, no cars older than 2005. Unmodified ECONOMY production cars (meaning no sports cars) with only Standard or Sports tires allowed.

* Heavyweight Sedan Class. This class is relegated to heavy (3500 lbs. or heavier) coupes and sedans (no sports cars) with no weight modifications. Production cars only with Standard/Sports tires required.

* Compact/Lightweight Class. This class is relegated to compact cars. No Kei/mini cars allowed. Production cars only with Standard/Sports tires.

* Touring Car Class. This is a class reserved to coupes and sedans tuned for racing. You are allowed more tuning options including weight reduction and some racing modiciation (mostly adding wings). No sports cars allowed, and only Standard/Sports tires are allowed.

* Grand Touring Class. This class is reserved to sports cars tuned for racing. Production cars only with no tire regulations (meaning you can use racing tires). No supercars allowed.

* Tuner Class. This class is an exciting style of racing where anyone can bring any production car with unlimited levels of tuning. Only requirement- it must be a production car.



Can you think of any more fun classes to comprise a Gran Turismo Runoffs series?