TO:☒ Teams☒ Manufacturers

CATEGORY:☒ Hypercar☒ LMGT3☒ LMP2DECISION N°: WEC_2024_D40_All_ Tyres_pressure_and_camber_LE MANS
DATE:

31/05/2024

FROM: The WEC Committee

SUBJECT:

Hypercar, LMP2 & LMGT3 Tyre Pressure & Camber for Le Mans Competition

APPLICABLE REGULATION
Article 6.5.3☒ 2024 FIA World Endurance Championship Sporting Regulations

DECISION
As per Article 6.5.3 of the FIA World Endurance Championship Sporting Regulations, the Technical Delegates will monitor
relative tire pressure and static camber values of cars.
Reference tire pressures and cambers for dry-weather tyres are provided by the designated tire suppliers in the following
tables.
Checks can be performed at any time by (without it being limited to): the Technical Delegates, their assistants, judges offact, tire supplier personnel.
Tire pressure monitoring
Tire pressure will be monitored using tire pressure monitoring sensors (“TPMS”) and manual gauge readings (LMP2 only).
The TPMS signal will be randomly checked with manual gauge readings by scrutineers and/or tire manufacturer technicians.
If the TPMS signal is higher compared to the manual gauge reading by more than 0.03 bar, it will be reported to thestewards.
The minimum stabilized tire pressure requirement will be deemed to be the average hot tire pressure over one full lap when
lap-to-lap pressure variation is ≤ 1% when track under green flag status.
Tyre pressure control in the pit box (static measurement – LMP2 only):
At any time, upon the request of the Technical Delegate, and under the supervision of an Official, a tyre manufacturer
technician will perform a manual static tyre pressure check.
When instructed by the official, a competitor must make the wheels and tyres available for measurement in an area
designated by the Officials. At that time, the tyres will be considered fully under the tyre manufacturer’s control. Competitors
must comply in full cooperation with the official’s expectations.
Wheels and tyres must be placed in a horizontal and non-stacked position, with each valve stem facing up and with thevalve cap in place.
The tyre manufacturer’s measurements are the only official measurements of static tyre pressure.
Competitors must not influence the tyre pressure in their last laps before coming to the pits (as examples and not limited
to: changing brake balance strategy, changing recovery strategy, changing the brake/throttle crossing application …).
This process will not be used if the track is yellow/red within the last 3 laps prior to a Competitor pitting.
Any decision taken by the WEC Committee is not subject to appeal.
http://fiawec.alkamelsystems.com/committe.php

For the sake of clarity the pitlane position will not be taken into account.
Camber monitoring
The car will be checked, using the Technical Delegates’ reference scales, as it has come out of Parc Fermé with no driver
and with tire pressures set to the tyre manufacturer's minimum authorized relative pressure.
The tolerance for the camber gauge is set to 0.1°.

HYPERCAR:

HYPERCAR
Technical tyre Requirement
WEC 24h Le Mans 2024

V1-2024/05/27
Minimum FRONT Stabilized Relative
Pressure
Minimum REAR Stabilized Relative
Pressure
Minimum FRONT camber at static rideheight**Maximum FRONT camber at static rideheight**Minimum REAR camber at static rideheight**Maximum REAR camber at static rideheight**2.0b = 29.0psi
2.0b = 29.0psi
-2.7°
-1,0°
-2,0°
-1,0°

(**) as example, if the minimum static camber is -3°, competitors may
run at -2°5 and must not run at -3°5 of camber angle

Any decision taken by the WEC Committee is not subject to appeal.
http://fiawec.alkamelsystems.com/committe.php

LMP2:

Any decision taken by the WEC Committee is not subject to appeal.
http://fiawec.alkamelsystems.com/committe.php

LMGT3:

PERIOD OF VALIDITY/APPLICATION OF THE DECISION
This decision comes into effect:☒ with immediate application☐ from:And is applicable:☐ until further notice☒ for the mentioned event(s) only

Any decision taken by the WEC Committee is not subject to appeal.
http://fiawec.alkamelsystems.com/committe.php