Originally Posted by
Abe_Froman
Glass/clear plastic roller with a camera inside. The equation for area of an ecclipse is very simple...
But you really dont have to mess around with measuring at speed. This stuff has been figured out already...you can make a simple adjustment for the centripedal force of the tire mass at speed without have to measure everything at speed. There's no need to reinvent the wheel.....er..tire here.
I was ignoring the centripedal force figuring v^2/r was going to be the same for all tires at the same speed and mass.
Where the resistance to deformation in that 1ms will not be the same in all tires. I don't think it is measured anywhere. We can infer it from Crr. But the comment was about contact patch.
Here is a simpler statement.
If in 1ms tire A resists full (that same as at rest) deformation more than tire B the contact patches will be different sizes at the same width and PSI.