Ferrari 499P upgrades explained: key aerodynamic changes ahead of Imola WEC round. Ferrari’s updated 499P Hypercar made its first appearance at Imola WEC testing.

The Modena-based squad arrived at the Imola circuit completing the first day of testing with the updated 499P Hypercars.

As previously announced, Ferrari Hypercar took to the track at Imola for a Manufacturer Collective Test session, running both official and non-official 499P entries. The revised version of the World Championship-winning prototype reflects the changes introduced by the latest homologation process updates.

WEC, Ferrari: major aerodynamic refinements

As explained by Technical Director Ferdinando Cannizzo during the Endurance season presentation, the re-homologation process not only involves the relocation of the wind tunnel to the United States, but also changes to aerodynamic parameters. This effectively repositions the performance window through a new post-analysis data process, partly based on previously unused datasets.

As repeatedly highlighted during the winter, this has forced all manufacturers to redesign their aerodynamic maps, an opportunity many have used to introduce a development “joker.” Starting from the front of the car, modifications can be seen on the flow diverter profiles.

According to Cannizzo, these elements now feature a revised profile aligned with the bodywork surface. In the same area, visually, no changes appear to have been made to the front wing itself, while the vertical elements behind the nose are now taller, effectively becoming proper aerodynamic surfaces. The flow diverters on the wheel arch that connect to the mirrors have instead been reduced in height.

Based on Cannizzo’s indications, a reshaping of the engine cover is also noticeable. In this area, further updates can be identified: the rear wing endplates now feature profiles designed to encourage outwash, supported by a larger gurney compared to last year. The diffuser sidewall shows a curved outward trend, complete with a gurney flap on the trailing edge, alongside a trapezoidal profile with rounded edges.

On the upper trailing edge of the diffuser, the absence of the large gurney flap is notable, marking a return to a solution similar to the 2023 car. At floor level, however, the track images do not fully reveal the extent of the modifications introduced.

The only component likely to remain adjustable directly at the track is the rear wing, offering a degree of flexibility in terms of balance—an essential factor given the wide range of conditions encountered in endurance racing. Choosing the front wing setup, as explained by those involved, could lead to a general loss of downforce in extreme conditions, which is not ideal in long-distance races.

WEC, Ferrari: important work during the Prologue

The day was characterized by good weather and strong wind gusts. During the early morning hours, work focused on medium and soft compounds, accumulating significant mileage. By the end of the first session, car number 83 completed low-fuel runs simulating qualifying performance laps.

In the afternoon, race simulation runs alternated with more performance-focused stints, this time also involving the official cars. The data collected on medium and soft compounds—assuming the use of Michelin Pilot Sport Endurance 2026 tyres—will be highly valuable, even though Imola is not particularly demanding in terms of thermal degradation.

WEC, Ferrari: the Prologue work proves essential

If in recent seasons the 499P has proven competitive across a wide variety of circuits, this trend will need confirmation ahead of the upcoming 6 Hours of Imola. The updates introduced are not primarily aimed at increasing peak downforce, but rather at complying with FIA-imposed WEC performance parameters.

The limits in terms of drag resistance—an area where the 499P has traditionally excelled—and aerodynamic load are relatively straightforward to achieve. What is less immediate is creating a sufficiently stable platform capable of delivering peak performance across widely varying conditions.

The Prologue scheduled for April 14 will be crucial to complete the work begun in this test session. The Imola race remains one of the most complex on the calendar, especially from a strategic standpoint.

As stated by Antonello Coletta, “we will have to be good at quickly learning the new characteristics of the car and the tyres.” It remains to be seen whether Ferrari will lose some of its hallmark strengths, such as aerodynamic efficiency, under the new regulations. However, at Maranello there remains strong confidence in the validity and competitiveness of the car.