Quote:
Originally Posted by Spaceywilly
Yes load in that case refers to cornering load. More downforce on the tire would shift this whole curve upwards, but not in a linear way.
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I don't think so. Vertical load is vertical load. It doesn't matter if it's generated by weight transfer or by wings.
In the 500/700 lbs example the Cf is 1.4
Adding downforce to get the 2000/1500 lbs example the Cf is .75
It is an ultimate gain in traction, but the Cf still decreases. They talk about it as a tire's efficiency.
Remember cornering g is based on the available traction (second number) over vehicle weight.
So in the first case the car has 2800 lbs of available traction. If it is properly balanced 50/50 a 2800 lbs car will corner at 1.0g.
With the (ridiculous amount) downforce, even with the decreasing Cf, we still have 6000 lbs of traction and the same 2800 lbs car would corner at ~2.14g