Overview

• The FIA has introduced stricter rear wing flexibility tests starting at the Chinese Grand Prix on March 23, 2025.
• The new regulations reduce the allowable slot gap variation under a 75Kg vertical load from 2mm to 0.5mm.
• A temporary tolerance of 0.25mm will apply for the Chinese Grand Prix due to the short notice given to teams.
• All cars at the Australian Grand Prix were deemed legal under the previous 2mm limit, according to the FIA.
• The FIA's decision follows analysis of footage and static tests from the Australian Grand Prix, aiming to prevent aerodynamic advantages from flexible components.