The FIA has confirmed details of Tuesday's Strategy Group meeting, which included an agreement to shake-up the qualifying format, to create "more exciting cars" for 2017 and other more minor changes.
A deadline of February 29 to draft new technical rules for '17 has been delayed until April 30, though one particular proposal from McLaren gained enough support for it to warrant further investigation.
The majorty of the teams, FIA and other stakeholders believe McLaren's proposal offers the best solution to Formula 1's desire to have faster cars in '17 without having to raise tyre pressures, unlike Red Bull's proposal which would have seen a 50 per cent increase – something Mercedes warned would in fact slow the cars down.
The FIA noted the need for additional tyre testing to ensure Pirelli can cope with the increase in speed and downforce.
"New bodywork regulations have been adopted to create more exciting cars, delivering additional downforce to increase speeds and lower lap times," read a statement.
"The FIA, teams and official tyre supplier will continue discussions on the best solution for testing of the new tyres required as part of the regulations."
McLaren's solution would see the front-wing increase in width from 1650mm to 1800mm with simpler endplates. The rear-wing would also increase in width from 750mm to 950mm, but would sit lower at just 800mm, 150mm less than at present. The endplates would be swept rather than rectangular to create a more aggressive look.
The floor and bodywork will also increase in width by 200mm, creating wider cars, along with wider tyres: 305mm at the front compared to 245mm at present and 405mm at the rear, compared to 325mm in 2016.
A compromise has been reached with the size of the diffuser. Red Bull wanted a much larger diffuser, but it has been provisionally agreed to increase it from 125mm in height to 175mm, whilst its width increase by 50mm. It will now start 175mm ahead of the rear-axle. At present it starts on the axle line.
To account for the extra width and the larger tyres, the minimum weight will increase from 702kg to 722kg (with tyres estimated at +5kg).
Changes to the power unit have also been looked at, with further investigation into cost, obligation to supply, performance convergence and further noise improvement to be looked at.
