Formula 1 teams face an added complication in ensuring their cars are over the minimum weight limit from now on with the FIA no longer allowing them access to its own scales.
Up until this weekend's Singapore Grand Prix, the FIA had given F1 teams permission to weigh their cars on its scales that are set up at the pitlane entrance.
This gave teams the confidence that the weight measurements that they take themselves with their own equipment in the garage were completely in line with what the FIA said they were.
The consequences of being underweight are grave. Charles Leclerc and Pierre Gasly were disqualified from this year's Chinese Grand Prix over weight breaches, and George Russell lost victory in Belgium last season because of one.
In response to efforts by the FIA to minimise pitlane congestion over the course of the weekend – with teams often regularly queuing up to check their cars – procedures have been changed from this weekend's event.
Ahead of the weekend, F1 race director Rui Marques informed teams in the event notes: "The FIA scales will not be made available for teams to use from this event onwards."
While this means teams can no longer double check their cars on the official scales, the FIA is not leaving teams blind to how its scales are calibrated.
It is understood that teams will have access to weights that have been verified on its official scales so they can still compare these with their own scales.
Alpine racing director Dave Greenwood said no longer being able to weigh a full car meant teams would likely leave a bit more leeway.
Asked if there were times when the teams' own measurements were different to what the FIA stated, Greenwood said: "Yes, but that's all part of the fact that we need to build in margins.
"At the end of the day, the only weight that matters is what it weighs on their scales. So we always have to take a margin to make sure we are where we need to be."
Haas chief race engineer Francesco Nenci agreed that one of the consequences of not being sure of the FIA measurements was that teams would have to factor in the risk element of potential variation between scales.
"The more confirmation you get from the FIA the better," he said. "From an engineering point of view, we should be capable of dealing without.
"Obviously, there is a calibration [difference] between the FIA's scale and our scales that you need to take account of, so possibly the margin will have to go up a bit."
Other teams have played down the impact and believe it will just be down to teams to decide how close to the edge they want to be.
Red Bull chief engineer Paul Monaghan said: "Each team will approach its minimum weight differently. You can ask the silver people [Mercedes], the poor souls have been chucked out for that. It's painful if it happens to you.
"No one will set out to try and evade it, because it's so easy to be caught with it. So set your margins for what you believe to be your consumptions. Roll the dice and see if you're correct."
Asked if the new FIA approach changed anything for his team, he said: "For me, no. Other people might turn around and say, 'oh my word, the world stopped rotating, the magnetic field has collapsed and the Earth's core has solidified'.
"We will deal with it, and we will do what we have to do."
