1981 Season

The 1981 season opens in the aftermath of the FISA–FOCA war — a bitter dispute between the sport’s governing body and the constructors’ association that threatened to split Formula One into two rival championships. The central issue was FISA’s plan to ban aerodynamic ground-effect skirts, devices that sealed the gap between the car’s bodywork and the track surface to generate enormous downforce. After months of brinkmanship, FOCA agreed to accept the skirt ban in exchange for guaranteed financial arrangements and a four-year period of regulatory stability. The resulting Concorde Agreement was signed in Paris just days before the season opener.

As a consequence, the South African Grand Prix at Kyalami — originally scheduled as the season opener on 7 February — ran as a non-championship Formula Libre race. The FISA-aligned teams (Ferrari, Ligier, Osella, Renault, and Alfa Romeo) did not participate; the FOCA teams raced in 1980-specification trim with sliding skirts still fitted. Carlos Reutemann won.

Driver changes

Didier Pironi leaves Ligier for Ferrari, where 1979 World Champion Jody Scheckter has retired. Jean-Pierre Jabouille is signed by Ligier from Renault to replace Pironi, but he is still recovering from serious leg injuries sustained in the 1980 Canadian Grand Prix. Jean-Pierre Jarier acts as his stand-in for the opening races.

Renault signs Alain Prost despite his two-year contract with McLaren. McLaren, forced to replace Prost at short notice, turns to the suggestion of main sponsor Marlboro: Andrea de Cesaris, moving from Alfa Romeo. Mario Andretti fills the Alfa Romeo vacancy, leaving Lotus after five years with the team. Nigel Mansell is promoted to a full-season drive at Lotus.

Tyrrell loses both its 1980 drivers and replaces them with Eddie Cheever, arriving from Osella, and Kevin Cogan.

Team changes

Theodore enters with their own chassis; the Shadow name, absorbed by Theodore mid-1980, disappears. RAM Racing, who ran a customer Williams chassis in 1980, does not return. March Engineering uses that chassis to make a comeback to Formula One.

Toleman makes their Formula One debut with a turbocharged Hart engine and Pirelli tyres, becoming one of the early adopters of the turbo trend. Their first chassis is reported to be overweight and underpowered. Ligier acquires major sponsorship from Talbot, which also supplies the team’s new Matra V12 engines, replacing the Ford-Cosworth.

Goodyear announces in December that it is withdrawing immediately from European racing. All teams begin the season on Michelin tyres. Avon and Pirelli join the sport as new tyre manufacturers.

Calendar

Fifteen championship rounds are scheduled. Long Beach, California is the season opener after the Argentine and Brazilian Grands Prix are moved to March and April. Brazil moves from the Interlagos circuit in São Paulo to Jacarepaguá in Rio de Janeiro, following long-standing safety concerns at Interlagos.

A new race joins the calendar: the San Marino Grand Prix at the Autodromo Dino Ferrari near Imola. Though the circuit is in Italy, the race is sanctioned under the name of the nearby microstate. The Italian Grand Prix itself returns to Autodromo Nazionale di Monza after the 1980 edition was held at Imola; Monza undergoes major upgrades including a new pit building.

The Spanish Grand Prix returns to the championship after the 1980 edition was excluded. The French Grand Prix moves from Paul Ricard to Dijon-Prenois, and the British Grand Prix from Brands Hatch to Silverstone — both circuits alternating as they have done in previous years.

The United States Grand Prix at Watkins Glen is cancelled due to the organiser’s financial difficulties and replaced by the Caesars Palace Grand Prix, held on the parking lot of a Las Vegas hotel and casino.

Regulation changes

Aerodynamic sliding skirts are banned. Cars must now maintain a minimum 6 cm of ground clearance at all times, substantially reducing downforce compared to 1980. The change forces all teams to redesign their cars around significantly reduced aerodynamic performance.

For the first time, the survival cell is treated as a discrete structural entity: it must extend in front of the driver’s feet and be wholly reinforced. The minimum weight of the car rises from 575 kg to 585 kg.

On the starting grid, cars are placed in a 1×1×1 single-file formation instead of the previous staggered 2×2 pattern. All pit lanes must have a minimum width of 10 m, and tyre barriers are installed at certain circuits for the first time.