Ferrari is expected to introduce its long-awaited rear suspension upgrade at next week’s Belgian Grand Prix, following a low-key but technically important test during a filming day at Mugello on Thursday.
The SF-25’s updated rear end is seen as a critical development aimed at stabilizing the car’s ride and unlocking long-missing performance.
Ferrari used its second and final filming day to trial its revised suspension setup over 200 km of track running. Charles Leclerc drove in the morning, followed by Lewis Hamilton in the afternoon, with both completing 19 laps apiece, according to Motorsport.com's Italian affiliate.
Ferrari’s technical director Loïc Serra oversaw the session, carefully evaluating how the modified geometry performed on track.
The new design features a reworked wishbone mounting point to the gearbox, aimed at improving anti-squat characteristics and offering more consistent aerodynamic behavior under load.
While not as radical as the layout adopted by Mercedes on the W16, Ferrari’s engineers hope the modification will allow better control of ground clearance, enabling optimal ride height and more consistent aerodynamic performance.
This is critical for a car that has struggled with setup compromises, costing lap time and race pace.
Stability and Consistency
Data from the Mugello run, however, reportedly showed encouraging signs in terms of aero consistency and suspension response, even if the test was limited by the use of Pirelli’s demo tyres.
But the real value lies in a broader tyre operating window and improved drivability at the limit.
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With only one practice session before qualifying at Spa-Francorchamps due to the event’s Sprint weekend format, Ferrari will need to fine-tune the system quickly.
But after a winless first half of 2025, the team sees its suspension upgrade as its best shot at clawing back lost ground and ending its drought.
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