Equation for weight?

[Jersey Tom]

There is significant influence of vehicle mass in and of itself.. for the same reason that load transfer has an effect.

Any event.. no. It's not as simple as a linear 1:1 relationship. That would make no sense. That'd be like saying if you added 100% mass you would lose 100% cornering. Makes no sense.

[Ciro Pabón]

... but weight transfer doesn't depend on mass. It depends on CG height and wheelbase. There are plenty of heavy vehicles that can have larger lateral Gs than small vehicles.

A vehicle that weighs a few tens of grams, like an R/C car produces Gs similar to a vehicle that weighs several tens of tons, like a heavy truck. That's a variation of 1.000.000 times the weight.

Large vehicle, ~2 Gs


Small vehicles, still ~2 Gs


There is a small effect of weight on friction factor, but it was overlooked for centuries, it cannot be large.

I still think that there's no direct influence of mass on cornering.

That's the reason why a pendulum clock works.

[Jersey Tom]

There is a big influence of weight (or really contact pressure) on tire friction. BIG.

If you take a racecar and add significant mass to it, even without changing CG height, you will lose significant cornering capacity.

It isn't 1:1, ie adding 10% mass doesn't = losing 10% grip, but 3% is enough to be the difference between pole position and not even making the field.