Typical D1GP Vehicle Regulations
Considering the fact that the D1GP is a series geared towards production cars only, there are a number of different race regulations that the vehicle must undergo in order to be eligible to compete. They are:
- Only Two wheel drive (FR/RR/MR). The vehicle has to be a production, road-going model by a major vehicle manufacturer and must be rear-wheel drive, front-wheel drive, or all wheel drive from the factory.
- Vehicles constructed by a vehicle manufacturer solely for the purpose of racing are prohibited.
- front wheel drive (FF) cars with an RWD platform conversion are allowed.
- all wheel drive (4WD) cars without any RWD platform conversion, are prohibited.
- The vehicle must retain the original chassis/body—only stock body constructed from a vehicle manufacturer is allowed.
- No tube frame vehicles or tube frame chassis extensions are permissible unless part of the OEM structure
- Space frame chassis are not permitted, additional triangulation and bracing of suspension turret/mounting points is allowed so long as the car vehicle contains its original monocoque chassis.
- Vehicles must retain their original VIN in its OEM position as well as the OEM chassis plate where applicable -- VIN must not be altered, clearly visible and readable.
- Convertible vehicles must have a hard top installed and a roll cage which will be effective in the event of a vehicle rolling onto its roof. The hard top must be securely fastened to the body.
- The vehicles appearance must be similar to that of the original vehicle.
- Slick Tires (S-Tires) were prohibited after the first season as they are not road legal, after Nobuteru Taniguchi used them to win the championship in 2001. The series now only permits commercially available road tires approved by the organization.
- Catalytic converters must be installed to keep the vehicle to the maximum noise limit at race circuits.
In the past, Drivers’ Search rules were more lenient to that of the championship rules until 2005, which the same rules apply to this day. For a full list of these regulations, please view them at The Official D1GP Rules Page.
Read more about this topic: D1 Grand Prix
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