Street Tire Class
The high downforce, low drag R2.STATIC wing will keep your car glued to the track. At 65″, this wing is just under the maximum width permitted. Here are the street tire class rules for RTA.

4-3.6 Aftermarket rear wings are permitted and must fit within a 68.5” x 15.5” tech
inspection box as installed on the vehicle including all components.
4-3.7 No portion of the rear wing may be the highest point on the vehicle. Exception
allowed for hatchbacks and wagons that have no rear deck to mount a wing to.
4-3.8 No portion of the wing may be rearward of the rear most point on the OEM
bodywork.
4-3.10 Active aero is not permitted.
4-3.11 OEM wings or aero packages with 2 or more separate elements may be used in
an unmodified form other than to allow for adjustability. Only 1 aftermarket
wing is permitted.

Modified Class
Run the most advanced aero package available. Upgrade your static R2 to a Dynamic Wing and save over a second in lap time.

5-3.2 Only one wing is permitted.
5-3.3 Active aero is permitted.

Super Modified Class
Anything goes, except a sucker car.

6-3.1 Aerodynamic aids are unrestricted with the exception of rule 2-2.2 which still
applies.
6-3.2 Active aero is permitted.