2025 Chinese Grand Prix - Event Notes - Pirelli Preview

2025 CHINESE GRAND PRIX 21 - 23 March 2025 The FIA Formula One Race DirectorFrom The FIA Formula One Race Director To All Teams, All OfficialsDocument 1 Date 19 March 2025 Time 10:40 Title Event Notes - Pirelli Preview Description Pirelli Preview Enclosed 25R02SHA Preview - Issue A.pdf Rui Marques Pstartf: Pstartr: T:Prear = (T - 70) ∙ 0.118+ PstartrPfront = (T - 70) ∙ 0.128 + PstartfPressures & camber Cold Pressure Cooling Curve Minimum starting pressure on the front axle [psi] Minimum starting pressure on the rear axle [psi] Tyre temperature [°C]Grand Prix of China 21/03-23/03/2025 (25R02SHA)In agreement with the FIA and in accordance with Article 30.5 a) of the F1 Sporting Regulations, this document contains the prescriptions for the operation of tyres during the following event. Document version 1 Issue A Maximum heating times and temperatures (tread & sidewall) • Not permitted to switch tyres from their originally allocated position. • Do not subject tyres to large deformation or heavy impact. • Do not leave fitted tyres exposed at an air temperature lower than 10°C and/or any excessive UV emission. • Revised prescriptions could be issued during the race weekend in accordance with TD003. • Cut-off time for fitting tyres at an event on sunday morning: 4 hours prior to the race start • Heating time temperature limits apply to the actual tyre surface temperature measured with the IR gun as detailed in the TD003 • BLANKET HEATING TIME for each temperature range to be counted from the moment the blanket control unit is set to reach its targeted temperature within its correspondent interval • Cold cooling curve temperature limits apply to the tyre side wall temperature measured with the probe as detailed in TD003 Teams are kindly reminded that the following will be subject to FIA checks during the event: • Starting pressures • Cold pressures (according to the cold pressure cooling curves) • Re-heat pressures • EOS Camber • Maximum tyre temperatures and times in blankets • Tyre swapping FL FR RL RR BW1 BW2 BW3 BW4 CY1 CY2 CY3 CY4 DR1 DR2 DR3 DR4 MG1 MG2 MG3 MG4 WB1 WB2 WB3 WB4Intermediate WetCompound C3C2 C4 Q3 tyre C4Mandatory race tyres C2 C3 1012141618202224262830 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70Pressure [psi] Temperature [ °C]Front pressure Rear pressure Slicks Intermediate Wet Front 26.5 psi 26.0 psi 22.0 psi Rear 23.0 psi 25.0 psi 20.5 psiCamber limit -1.75°-3.00°Expected stabilized running pressure ≥27.5 psi ≥24.5 psiMinimum starting pressure No blankets allowedTemperature Slicks Intermediate Wetmax. 2h max. 2h • Temperatures refer to tyre tread and side wall temperatures, not blanket or controller set-point temperatures. • Tyres may only be heated prior to the session in which they are intended to be used. • The temperatures apply at all times during the event.0 60 70 (°C)Compounds selection Prescriptions Tyre Notes General NotesCircuit Layout