Why Lluvia weather starts are different
Starting a Formula 1 carrera in Lluvia conditions is fundamentally different from a dry start. The grip levels are dramatically reduced — a full Lluvia tire on a soaked surface offers roughly 60-70% of the grip available on a dry track with slicks. Visibility is compromised by spray, which in heavy rain can reduce a following piloto's sight distance to under 20 meters at 250 km/h on a Recta. The risk of a multi-car incident on the first lap is significantly higher because the spray concentrates in the first few rows, and drivers in mid-pack are essentially racing blind into the first braking zone. For these reasons, the FIA has developed specific procedures for Lluvia weather starts.
The three types of Lluvia weather starts
Standing start with Lluvia tires: If conditions are Lluvia but not dangerously so, the carrera can start normally from the Parrilla on Lluvia or Intermedio tires. This is the most exciting option but also the riskiest. The 2021 Russian Grand Prix started on intermediates after a pre-carrera shower, and the opening laps produced dramatic position changes as drivers adapted to a drying but still slippery surface. A standing start in the Lluvia rewards drivers with superior car control and brave braking into Turn 1.
Coche de seguridad start: If conditions are too dangerous for a standing start but the carrera can proceed, the Coche de seguridad leads the field for several laps. Once conditions improve, the Coche de seguridad pulls in and the carrera begins with a rolling start. This is the most common Lluvia weather procedure. At the 2021 Belgian Grand Prix, the Coche de seguridad led the field for two laps behind closed doors before the carrera was red-flagged and ultimately abandoned — a controversial decision that exposed the limits of the Coche de seguridad start procedure in extreme conditions. The 2020 Turkish Grand Prix started behind the Coche de seguridad, and when it pulled in, the field spread out significantly in the first few laps as drivers searched for grip, producing a carrera that looked processional but was actually a masterclass in tyre management.
Delayed start: If conditions are too dangerous for any form of start, the carrera is delayed until conditions improve. This can mean waiting minutes or hours. In extreme cases, the carrera may be postponed to the following day. The 2023 Australian Grand Prix saw a delayed start due to heavy rain, and the eventual carrera began behind the Coche de seguridad before transitioning to a standing start once conditions were assessed. The 2021 Belgian GP remains the most extreme example — the carrera was officially started and then abandoned after just two Coche de seguridad laps, awarding half points, which prompted the FIA to revise its points-awarding rules for future shortened races.
How drivers prepare for Lluvia starts
Lluvia starts require a completely different approach from dry starts. Drivers must find the right balance between aggression and caution — pushing Duro enough to gain positions but not so Duro that they lose control on the slippery surface.
The clutch technique is different in the Lluvia. Drivers use less launch RPM — typically 10,000-11,000 RPM versus 12,000-13,000 RPM in the dry — to avoid wheel spin, and they must be smooth with their throttle application to avoid breaking traction. The bite point of the clutch shifts as temperatures change, so the equipo recalibrates the clutch paddle setting on the Parrilla based on surface temperature readings. On a Lluvia Parrilla, tyre blankets are crítico: the front tires need to be at their operating window (around 80-90°C for full wets) before the lights go out, because a cold tire on a Lluvia Parrilla produces almost no grip for the first few hundred meters.
The first few corners are the most crítico — drivers who can stay clean and build momentum often gain positions that they would not be able to recover later in the carrera. At the 2020 Styrian Grand Prix, Lewis Hamilton started on pole on a Lluvia track and built a three-second gap in the first two laps alone, while several midfield drivers lost positions by either being too cautious or too aggressive on cold tires. The spatial awareness needed in spray conditions is a skill that separates experienced drivers from rookies — knowing where the car ahead is when you cannot see it requires trusting the radar, the radio, and muscle memory from thousands of Lluvia-weather laps.
Why Lluvia weather starts produce drama
Lluvia weather starts are among the most dramatic moments in F1 because they combine uncertainty, risk, and opportunity. Drivers who excel in Lluvia conditions — like Senna, Schumacher, and Verstappen — have used Lluvia starts to gain positions that would be impossible in the dry. Ayrton Senna's legendary 1993 European Grand Prix at Donington Park remains the benchmark: he overtook five cars on the opening lap in torrential rain, including passing Michael Schumacher around the outside at Redgate corner. More recently, Verstappen's charge from 14th to victory at the 2022 São Paulo Sprint in mixed conditions showed how a superior Lluvia-weather piloto can dismantle an entire field when the track is unpredictable.
The drama is amplified by tyre strategy. In changing conditions, the decision of when to switch from full wets to intermediates — or from inters to slicks — can define a carrera. At the 2020 Turkish Grand Prix, Lance Stroll led for much of the carrera after a brilliant Lluvia start, but the equipo's decision to stay on intermediates too long as the track dried cost him the podium. The start is just the opening move in a chess match played at 300 km/h.
From a technical standpoint, the reduced Carga aerodinámica in Lluvia conditions changes the braking profiles entirely. A dry braking zone that requires 50 meters of deceleration might need 80 meters in the Lluvia. This forces drivers to brake earlier and more progressively, which rewards those with a sensitive right foot and punishes those who trail-brake aggressively. The standing start on a Lluvia Parrilla is essentially a controlled wheelspin event — the piloto modulates torque delivery to find the maximum traction the surface can offer without exceeding it.
In the 2026 era, with lighter cars and less Carga aerodinámica, Lluvia weather starts will be even more challenging. The reduced Carga aerodinámica means less grip in the corners, and the lighter cars will be more nervous under braking. The drivers who master Lluvia weather starts in 2026 will have a significativo advantage.
Related reading
- F1 Wet Racing and Rain Strategy Explained
- F1 Formation Laps and carrera Starts
- F1 Safety Car, VSC, and Red Flags Explained
- F1 Blog
Where Fans Get Confused
Lluvia start decisions are not about courage versus caution. carrera control has to judge visibility, standing water, spray, tyre temperature and recovery access before the field compresses into Turn 1. A static start can be thrilling and still be the wrong safety call.
A common misunderstanding is that the FIA makes Lluvia start decisions based on rainfall intensity. It does not. The decision depends on track conditions at the moment of the start, not the forecast. The carrera Director uses a combination of piloto radio feedback, onboard cameras, water level sensors embedded in the track surface, and observations from the Coche de seguridad running at speed. At the 2021 Belgian Grand Prix, it was not the rain itself that caused the abandonment — it was the spray. Drivers could not see the car ahead, and in a pack of 20 cars entering La Source, that becomes a life-threatening visibility problem.
Another frequent confusion is the difference between a Coche de seguridad start and a rolling start behind the Coche de seguridad. They are not the same procedure. A Coche de seguridad start means the carrera begins with the Coche de seguridad on track, and laps count from the start of the Coche de seguridad period. A rolling start after the Coche de seguridad pulls in is when the Coche de seguridad has been deployed for an incident or weather, and the carrera resumes from a moving formation. The distinction matters because Coche de seguridad start laps count toward the carrera distance, while post-incident Coche de seguridad laps also count — but the carrera has already officially started.
The key clues are onboard visibility and piloto feedback. If several drivers report aquaplaning on the straights or cannot see braking markers, the procedure is likely to change. Rain volume matters less than whether the cars can be controlled in a pack. Watch the equipo radio during a Lluvia Vuelta de formación — if multiple drivers are reporting standing water in the same sector, that is the signal that carrera control is monitoring most closely.