FIA Tightens Rear Wing Flexibility Regulations for Chinese Grand Prix

The allowable slot gap variation has been reduced to 0.5mm, with a temporary tolerance of 0.25mm due to short notice.

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.