ARTICLE 4: MASS
- Minimum mass
The mass of the car, without fuel, must not be less than 600kg at all times during the Competition, with dry-weather tyres already fitted.
Ballast can be used provided it is secured in such a way that tools are required for its removal and they have to be designated for the sole purpose of achieving the driver weight specified.
They need to:- Be entirely located to the car between the front and rear extent of the cockpit entry template.
- Be attached securely to the survival cell and sealed by the FIA.
- Be clearly identified
- Mass distribution
With the car resting on a horizontal plane the mass measured at the front and rear axles must not be less than the mass specified in Article 4.1 factored by 0.445 and 0.540 respectively at all times during the qualifying practice session. Rounding will be to nearest 0.5kg. - Mass of tyres
The mass limit specified in Article 4.1 and the factors specified in Article 4.2 will be adjusted up or down according to any differences (rounded to the nearest 1kg for Article 4.1) between the total set and individual axle set mass respectively of the dry-weather tyres used in the Championship taking place in the calendar year referred to in the title and the preceding year’s Championship. - Adding during the race
With the exception of compressed gases, no substance may be added to the car during the race. If it becomes necessary to replace any part of the car during the race, the mass of the new part must not be more than that of the original part. - Mass of the driver
The mass of the driver with his seat and driving equipment will be established by the FIA technical delegate at the first Competition of the Championship.
Once the weight of the heavier driver is established, a ballast will be added in the seat area of other competitors in order to balance the weight gap between drivers.
All Along The Racetrack 