FPV GTHO, on 23 Feb 2019 - 12:57, said:![](https://forums.autosport.com/public/style_images/Theo/snapback.png)
Not really following your logic there. The current contact patch is split 305/405mm or roughly 43/57% front to rear. Not far off what the mandated weight distribution is. According to the tender, the 2021 tyres will be 270/405mm or roughly 40/60% front to rear. The weight distribution will need to be moved back to suit. Teams are currently pushing their power units forward to meet the weight distribution with little ballast to play with, so you would think the simplest solution would be to reduce that distance between power unit and axle to match the new weight distribution. That would then lead to shorter cars.
Well, I had to give this a serious think over and I still doubt I I have done enough thinking in the right direction!
As far as I can see, when keeping the length of a car identical but the front wheels becoming lighter, it means that the fron end of the car will become lighter and the Centero point of the weight shifting backwards.
According me, when the rear wheels are put more rearwards, (longer wheelbase & car....) then the CG shifts forwards again. But somehow I can't follow your logic that reducing the wheelbase will result into the same. At least assuming that there is no further loss of weight.
Mind you, this does not mean that I don't believe you. You could be right.
Perhaps I must bring out my Lego parts and do some experiments to see what happens then.