Race Scrutineering
United States Grand Prix · 2025 · 19 October 2025 · Doc 57
2025 UNITED STATES GRAND PRIX
17 - 19 October 2025
Technical Delegate's Report Before the Race:
The following parts have been replaced today after 12:55 and before the start of the race:
Racing Bulls Honda RBPT:
Car 30: Rear wing assembly The uppermost rear wing element adjustable positions were checked on car number 30.
The minimum distance between the adjacent rear wing sections at any longitudinal vertical plane was
checked on car numbers 30.
The pressure relief valve of the ICE coolant header tank was checked on car numbers 04, 44 and 22. An asymmetric and symmetric front wing deflection test was carried out on car numbers 14, 87 and
27. A front wing flap deflection test was carried out on car numbers 14, 87 and 27.
The size of the front wing gurneys was checked on car numbers 81, 04, 22, 10, 43, 31, 87, 23, 55,
27 and 05. The size of the rear wing gurney was checked on all cars.
A fuel mass check was carried out on car number 04.
On the grid it was checked that all cars had fitted their tyres and the tyre heating blankets were
disconnected, when the "5-Minutes" signal was given.
From The FIA Formula One Technical Delegate To The Stewards Document 57 Date 19 October 2025 Time 17:48
On the grid the temperature of the LHS and RHS front and rear tyre was checked on car numbers 04, 01, 22, 18, 17, 43, 31, 87 and 27.
On the grid the minimum tyre starting pressure of the LHS and RHS front and rear tyre was checked on all cars.
After the Race:
The following cars were weighed:
Number Car Driver
81 McLaren Mercedes Oscar Piastri 04 McLaren Mercedes Lando Norris 16 Ferrari Charles Leclerc 44 Ferrari Lewis Hamilton 01 Red Bull Racing Honda RBPT Max Verstappen
22 Red Bull Racing Honda RBPT Yuki Tsunoda
63 Mercedes George Russell 12 Mercedes Kimi Antonelli 18 Aston Martin Aramco Mercedes Lance Stroll
14 Aston Martin Aramco Mercedes Fernando Alonso
10 Alpine Renault Pierre Gasly 43 Alpine Renault Franco Colapinto 31 Haas Ferrari Esteban Ocon 87 Haas Ferrari Oliver Bearman 06 Racing Bulls Honda RBPT Isack Hadjar
30 Racing Bulls Honda RBPT Liam Lawson
23 Williams Mercedes Alexander Albon 27 Kick Sauber Ferrari Nico Hülkenberg 05 Kick Sauber Ferrari Gabriel Bortoleto
The following aerodynamic component or bodywork areas were checked on car numbers 81, 44 and 22:
- Floor Body - TR Article 3.5.1 - Floor Fences - TR Article 3.5.2
- Nose - TR Article 3.6.1 - Forward Chassis - TR Article 3.6.2 - Mid Chassis - TR Article 3.6.3 - Mirror Housing - TR Article 3.6.4 - Driver Cooling Scoop - TR Article 3.6.5 - Sidepod - TR Article 3.7.1 - Coke Panel - TR Article 3.7.2 - Engine Cover - TR Article 3.7.3 - Tail - TR Article 3.8.1 - Front Wing Profiles - TR Article 3.9.1 - Front Wing Endplate body - TR Article 3.9.2 - Front Wing Tip - TR Article 3.9.3 - Front Wing Diveplane - TR Article 3.9.4 - Front Wing Endplate - TR Article 3.9.5 - Rear Wing Profiles - TR Article 3.10.1 - Pylons - TR Article 3.10.2 - Rear Wing Beam - TR Article 3.10.3 - Rear Wing Endplate Body - TR Article 3.10.4 - Rear Wing Tip - TR Article 3.10.5 - Rear Wing Endplate - TR Article 3.10.7
The low pressure fuel system of car number 01 was checked.
The skid thickness of car numbers 81, 04, 16, 44, 01 and 22 was checked.
The hardness of the skids of car numbers 04, 16, and 01 was checked.
The fuel pressure of all cars during the race was checked.
The logged pressure within the engine cooling system during the race was checked on all cars.
The engine high rev limit bands were checked on all cars.
Fuel flow meter calibration checksums were checked on all cars.
The instantaneous fuel mass flow of all cars was checked.
The partial load fuel mass flow of all cars was checked.
The fuel temperature of all cars was checked.
The plenum temperature was checked on all cars.
The oil consumption was checked on all cars.
The exhaust fluid mass flow of all cars was checked.
The IVT code and calibration checksums were checked on all cars.
The IVT temperatures were checked on all cars.
The ES state of charge on-track limits were checked on all cars.
The lap energy release and recovery limits were checked on all cars.
The MGU-K power limits were checked on all cars.
The maximum MGU-K speed was checked on all cars.
The maximum MGU-K torque was checked on all cars.
The maximum MGU-H speed was checked on all cars.
The MGU-K power model was checked on all cars.
The ES power model was checked on all cars.
The MGU-K use at the race start was checked on all cars.
It was checked on all cars that the ES was not charged while the car was stationary in the pits.
The torque coordinator demands were checked on all cars.
The torque control was checked on all cars.
The session type has been confirmed for all cars.
Chassis FIA checksum was checked on all cars taking part in the race.
The rear brakes pressure control was checked on all cars.
The brake temperature warnings were checked on all cars.
The steering wheel of all cars has been checked.
The race start data of all cars have been checked.
Single clutch paddle use for the race start has been checked on all cars.
It was checked that no car exceeded 80 km/h when leaving the formation grid prior to the start of the race.
It was verified on all cars that the PCU dash display configuration was not changed during Parc Fermé.
The aerodynamic oscillations metrics were checked on all cars.
The tyre starting pressures of all cars during the race were checked.
The tyres cold pressure was checked on car numbers 18 and 14.
The tyres used by all drivers during the race today have been checked.
All car weights and the items checked were found to be in conformity with the 2025 FIA Formula One Technical Regulations.
After the race car number 01 was randomly chosen among the top ten cars for more extensive physical inspections.
Subject to these physical inspections was the steering rack assembly as well as all attached sensors, their loom routing and connections to the SECU.