2010 Rules & Regulations

For Full details (PDF Format) :-

2009 Regulations LM Prototype P1 & P2 Category LM GT1 Category
LM GT2 Category Appendix A, B & C  

Overview of Changes for 2010

1- LM P1 & LM P2 bodywork:

At the rear:
Closing of the part behind the rear wheels. The use of grills or fairings to cover the rear wheel above the axis of the axle will no longer be allowed. The bodywork must be closed in this area and must carry the rear lights, rear stop lights and indicators.

On the sides:
Bodywork located at the rear of the axis of the rear wheels and above the reference plate must form a smooth, continuous, unbroken surface of convex form only, without cuts. It must not be set back more than 100mm in relation to the width of the bodywork at the axis of the rear axle (measured horizontally).

At the front:
Confirmation within 15 days of the aerodynamic definition of the front of the cars. It is currently under study and consultation with the manufacturers taking into account the technical feasibility and cost issues.

2- LM P1 engines: (figures for a given cubic capacity)

These adjustments will be applied proportionally to all cubic capacities in the 2010 technical regulations answer several objectives:
- Guarantee technical equality between the different technologies.
- Each technology used should allow each entrant to be competitive.

lms-engines (34K)

GT1 engine regulations in LM P1:

GT1 engines installed in LM P1s must comply with article 5 of the LM GT1 regulations (see: www.lemans.org) with the exception of: Accelerator (free)

- Direct injection (modifications to the cylinder heads must be approved by the ACO)
- Air box (volume free)

Use of engines in the Le Mans Series:
At present the regulations oblige entrants to use the same engine for 2 consecutive races minimum. In 2010, 3 sealed engines can be used freely during the season.
The number of engines (2) allowed for the Le Mans 24-Hours week remains unchanged.

3- Weight of the cars :

The minimum weight of the LM P1 diesel cars is increased to 930 kilos (30 kilos of ballast cancelled). The minimum weight of the other categories remains unchanged

4- LM GT :

In accordance with the announcement made during the Le Mans 24 Hours Press Conference, confirmation of the ACO’s position on the GT1 category at the end of September. For the GT 2 category, the 2009 ACO regulations will be applied in 2010.

Sporting regulations innovations

Mechanics carrying out wheel changes will be identified by arm bands supplied by the organisation.
Four arm bands will be allocated per car. The number of mechanics authorised in the work space remains unchanged (2).

For the Le Mans Series, the maximum driving time of 4 hours per driver in a race will be reconsidered.

The selection criteria for the Le Mans 24 Hours will be reinforced on the basis of two main principals:
1. Entrants having raced in a full Le Mans Series (2009 ALMS, LMS or the Asian Le Mans Series) on a regular basis will be favoured.
2. Applicants presenting evident technological advantages will also be favoured by the ACO.