Tire Lateral Deflection
 

I like this one too:

interesting the differance between spec miata and spec e30.

they use the same wheels miatas use 205/50 and spec e30 uses 225/50. looks like 205 behaves better if you are limeted to a 7" rim.

Different suspension though.

225/50 also has a taller sidewall.

Not the best run, 15x9 with 225/45/15 RS3 v1

Of course a bias slick deflects, it's not belted like the radial tires that 99.9% of autocrossers use.

This car would be faster with more tire.

A classic on the topic

Does the bead ever break because of severe deflection?