New PPF Formula?

[arena]

JoeP wrote:

1) I am not an expert in automotive engineering, but it appears that a formula should normalize power and grip, not use them directly:

(HP/Weight) - This is a good predictor of acceleration. I assembled the attached chart while comparing different options for a DE car. I compared cars I have driven over the years against some available options and milestone racing cars. Although the devil is in the details, I was very surprised at the overall agreement.

(Grip/Weight) - I have no data on this, but I would think that a 235mm wide tire would have mucher higher absolute traction on a Mini than on an M5. -- But, how do you quantify "grip" between different tire compounds?

2) What about Aero? When I look at SCCA participants, some of them have billboard-sized airfoils on them.

Great stuff. I would love to see a simmilar graph on grip with regards to weight and tire section.

Regarding Aero- AX speeds typically aren't high enough for any aero to have an effect on a street car... Yes people put spoilers on, no I'm no convinced they do anything at 60 mph...