Ferrari's engineers walked into a briefing on 13 May with three separate problems on the SF26 to answer for. All three had been identified by Lewis Hamilton in the days after the Miami Grand Prix. The simulator complaint and the hybrid deployment complaint have already been litigated in public. The middle complaint, the one about the front wing, is the one Ferrari has said least about and the one that might define Montreal.
After qualifying sixth in Miami, Hamilton told the team that Ferrari's front wing looks structurally different from the cars beating it. Independent aerodynamic study backed him up, according to coverage by Slipstream Stories, identifying the front-wing endplate dive plane as the single biggest piece of available downforce Ferrari is leaving on the table.
Mercedes, McLaren and Red Bull all run a small flat aerodynamic element on the outer edge of the endplate, mounted like a miniature dive plane. Its job is narrow but valuable: it splits the air cleanly around the front tyre before that turbulent wake can reach the floor and diffuser under the car. Clean air around the tyre means cleaner air feeding the underbody. Cleaner underbody air means more downforce for the same drag cost. The Ferrari SF26 does not have one.
That single missing component matters more in 2026 than it would in most seasons. With wind-tunnel hours capped by the cost cap and Ferrari already burning development cycles unpicking the simulator correlation problem Hamilton flagged, every aerodynamic gain has to count. The endplate dive plane is the kind of part rival teams have already validated. Ferrari does not need to invent it. They need to copy it cleanly and prove the tunnel data still maps to the car.
There is a complication. The 11-part Miami upgrade Ferrari brought to the SF26 was the largest single-race package any team has introduced this season, and most of it improved chassis balance through medium-speed corners. It worked. Charles Leclerc was quick through every low-speed section of the Miami International Autodrome. Hamilton would gain a tenth through a sequence of corners, then watch a Mercedes pull three tenths back on a single straight.
The better the chassis became, the more obvious the power gap became. Ferrari does not have the engine answer this weekend. That comes in Belgium. What they can do is take a known aerodynamic win, the endplate dive plane, and add it to a chassis that is already performing.
Montreal is a circuit built almost entirely out of the straights where the SF26's hybrid system has been cutting battery power earliest and the engine deficit is most exposed. A front-wing endplate dive plane will not close that engine gap. But it would reduce the drag penalty Ferrari pays through the chicanes, give Leclerc and Hamilton a cleaner platform on the hairpin exit, and stop costing them tyre-wake turbulence under the floor on every flat-out section.
The Canada package has not been confirmed by Ferrari. Andrea Stella's McLaren is also bringing the second half of a two-race aerodynamic push targeted at exactly the same area. If Ferrari arrives in Montreal without the endplate change, the gap to the front will look familiar by Sunday evening. Hamilton has already made the point. The May 13 briefing is on the record. Maranello has had a week to act on it.
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*Originally published on [News Formula One](https://newsformula.one/article/ferrari-front-wing-endplate-dive-plane-hamilton-canada-2026). Visit for full coverage.*
