General Rules
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Rules Applicable to All Classes
Each vehicle entered into the eXtremeSpeed Time Attack must be track ready and free from any mechanical defect. All cars must pass the technical inspection at the track to be allowed on track. The official technical inspection will be performed on each vehicle prior to being allowed to compete in the Time Attack competition.
Engine/Power Modifications:
Use of nitrous oxide injection systems not allowed.
Alcohol and Water Injection is allowed.
Hybrid/Electric, and/or any combination are allowed.
Engine Modifications are allowed in all classes. Please refer to specific rules for limitations in each Class.
E85 is allowed for use in all classes.
Bio-Diesel is allowed for use in all classes.
Natural gas cars are allowed.
Body and Frame Modifications:
Tube Frame Chassis not allowed. Unibody must remain intact and un-altered. Certain exceptions apply for safety and/or class.
The entire floorpan, firewall, and frame assemblies must remain in the stock position and cannot be relocated. Certain Exceptions apply depending on class.
Vehicle’s outline must be largely true to the original.
Wide Body Kits Allowed.
Fender Flares Allowed.
Convertibles with hard tops can use Carbon Fiber/Aluminum/Fiberglass hard tops.
Aerodynamics:
Aerodynamic parts are ALLOWED. Wings, Splitters, Canards, Under Trays, Diffusers, etc. Each class has specific restrictions on aerodynamic parts that may be installed.
Suspension and Brakes:
Suspension modifications are allowed in all classes. Class restrictions will be listed in each Class section.
Brake Upgrades are allowed in all Classes.
Tires:
All vehicles must use tires that are legal for use on public roads in the United States. Every tire must have a DOT listing from the tire manufacturer.
Safety Items:
All occupants must wear a safety helmet during on-track sessions. Recommended helmets certified to meet the following standards are permitted:
Snell Memorial Foundation – SA2005 and above
SFI Foundation – Spec 31.2, Spec 31.2ASnell 2000 or higher rated helmet allowed. Helmet DOES NOT need to be an SA rated helmet. DOT approved helmets are also allowed.
ROLL CAGES: All Vehicles that have roll cages must follow certain guidelines. Contact extreme Speed Time Attack for roll cage construction and materials:
BASIC DESIGN CONSIDERATIONS
The basic purpose of the roll cage is to protect the occupant if the car turns over, runs into an obstacle, or is struck by another car. It shall be designed to withstand compression forces from the weight of the car coming down on the rollover structure and to take fore/aft and lateral loads resulting from the car skidding along on its rollover structure.
Fuel Cells allowed (modification of factory floor pan is allowed for installation of Fuel Cell) Contact eXtremeSpeed for further details on Fuel Cell intelation.
Convertibles are allowed on track with roll bars. Some cars with factory roll protection are allowed on track without the need for an aftermarket/custom roll bar if they are equipped with a factory OEM roll protection system. Check with eXtremeSpeed Time Attack to verify your convertible vehicle is equipped with an adequate factory installed roll protection system.
A tow hook or tow strap must be installed on at least one end of the vehicle.
If any driver seat is used in conjunction with a race harness, a harness bar or roll bar is highly recommended. A race harness can be secured using bolts, so long as the angle of the harness, as it comes off the shoulder/seat, is within the limit of +/- 25 degrees. The OEM 3-point seat belt may be used with race seats, so long as the OEM 3-Point belt fits snugly across the hips and chest of the occupant, with no slack in the belt.
General Items:
Vehicles must be built from a model originally mass produced for legal street use in North America, Europe or Japan.
All cars are to use a timing device supplied by ETA.
All cars my be required to have decals displayed by ETA organizers. This may include doorplates on both sides of vehicle, a windshield banner, front or rear quarter panel or any other locations as specified.
Any vehicle entered may only compete in a one Class per event.
Conduct:
A driver, crew member or other “hard carded” participant acting is such a way that is considered by a ETA Official as endangering others will be fined a minimum of $500 dollars and may be disqualified from participating in any or all ETA events. All drivers and teams must keep safety and professionalism in mind at all times, and is aware of their surrounding environment, personnel actions, behavior, vehicles and equipment. ETA reserves the right to deem what actions or conditions constitute violation of this policy. Negligence of any kind or violation of any safety matter will not be tolerated.
Every ETA competition driver and team member has the right to ask questions and rationally discuss with the officials and/or staff, any issue pertaining to their performance, race operations, or the Scoring format. Any driver and/or team member that conducts him/herself in an inappropriate manner with the officials will be subject to the same penalties as listed above.