Are these tiny winglets the real reason some teams look faster in traffic?

 

GPS traces showed cars gaining +2-3 km/h in traffic and picking up unnatural mid corner rotation, a combo that screamed micro-aero assistance. Straight line efficiency rising in dirty air and front end stability improving in the wake is classic winglet behaviour. So when multiple overlays showed the same pattern, engineers quietly shifted from curiosity to suspicion.

Telemetry showed the rear staying unnaturally planted in wake, yaw plots revealed rotation gains that shouldn’t exist in dirty air, wake modelling pointed to micro aero smoothing turbulence. CFD deltas confirmed small stabilising vortices. All suggesting the winglets were quietly doing more than intended.

Winglets act as turbulence tamers in dirty air, generating small stabilising vortices that calm the rear end when a car sits in another’s wake. Their value spikes in active aero trains, where long periods in disturbed airflow make micro-stability at corner entry worth real lap time. Teams with already stable rear platforms gain most because the winglets amplify existing strengths, while cars with rear axle drift, like Ferrari and Haas feel the help but can’t fully convert it.

Teams are split because the winglets sit in a regulatory grey zone: some aero chiefs argue they’re a perfectly legal optimisation of an under policed rear bodywork region, a smart use of micro-elements the rules never explicitly constrained. Others insist they cross the spirit of the regulations by generating wake conditions vortices that were never meant to exist. That disagreement is exactly why the paddock is whispering when innovation meets ambiguity, interpretation becomes politics and politics becomes performance.

Race stint data made the effect impossible to ignore with winglets fitted, tyre life curves flattened, snap oversteer moments all but disappeared and mid corner minimum speeds held steady across long runs. The rear stayed calmer for longer, letting drivers commit earlier on entry and carry rotation without fighting instability. Over extended samples, degradation slowed, balance stayed predictable and the car behaved like a platform with subtle aero assistance rather than one living on the edge – a repeatable gain engineers immediately recognise as genuine performance.

Ferrari and Haas want FIA clarification, McLaren, Mercedes as well as Audi are already copying the idea. Enough measurable gains are now on the data sheets that many expect a technical directive to land. The classic pattern of concern, imitation and competitive impact that always triggers a clampdown.

Winglets look real if your GPS and CFD show repeatable gains: they look like noise if they don’t. The teams copying them clearly believe, the ones calling them a placebo haven’t unlocked the effect. Everyone else is waiting to see if the FIA steps in before the data forces the argument.

By Charlie Gardner 

📸 Imagery courtesy of Formula One (F1)