Doc 1 - Event Notes - Pirelli Preview

This document, issued by the FIA Formula One Race Director, Rui Marques, outlines the Pirelli tyre prescriptions for the 2025 Las Vegas Grand Prix, taking place from 20 to 22 November 2025. It is addressed to all teams and officials.

Document Details

• Document Number: 1
• Date: 18 November 2025
• Time: 16:15
• Title: Event Notes - Pirelli Preview
• Description: Pirelli Preview
• Enclosed: 25R22LAS Preview - Issue A.pdf

Tyre Prescriptions for the 2025 Las Vegas Grand Prix

The document provides detailed information regarding tyre compounds, pressures, and temperatures.

Compounds Selection

• Available Compounds: C3, C4, C5 (Slicks), Intermediate, Wet
• Mandatory Race Tyres: C3, C4
• Q3 Tyre: C5

Pressures & Camber

• Minimum Starting Pressure (psi):
  • Front: Slicks (28.0), Intermediate (28.0), Wet (23.0)
  • Rear: Slicks (26.0), Intermediate (26.5), Wet (21.0)
• Expected Stabilized Running Pressure (psi):
  • Front: ≥29.0
  • Rear: ≥27.0
• Camber Limit:
  • Front: -3.00°
  • Rear: -1.75°

Cold Pressure Cooling Curve

The document includes a graph and formulas for calculating front and rear pressures based on tyre temperature:

• Pfront = (T - 70) * 0.133 + Pstartf
• Prear = (T - 70) * 0.127 + Pstartr
  • Pstartf: Minimum starting pressure on the front axle [psi]
  • Pstartr: Minimum starting pressure on the rear axle [psi]
  • T: Tyre temperature [°C]

Maximum Heating Times and Temperatures (tread & sidewall)

• Slicks & Intermediate: Maximum 2 hours heating up to 60-70°C.
• Wet: No blankets allowed.

Tyre Notes

• Temperatures refer to tyre tread and sidewall, 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.
• Switching tyres from their originally allocated position is not permitted.
• Tyres should not be subjected to large deformation or heavy impact.
• Fitted tyres should not be exposed to air temperatures below 10°C or excessive UV emission.
• Revised prescriptions may be issued during the race weekend in accordance with TD003.
• Cut-off time for fitting tyres on Sunday morning is 4 hours prior to the race start.
• Heating time temperature limits apply to actual tyre surface temperature measured with an IR gun.
• Blanket heating time for each temperature range is counted from the moment the blanket control unit is set to reach its targeted temperature.
• Cold pressure cooling curve temperature limits apply to the average of 5 TPMS spots.

General Notes

Teams are reminded that the FIA will check the following 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