5.0

Originally Posted by m4a1mustang

That's actually not true. It's personal preference. You might not be comfortable with it, but that doesn't mean someone else wouldn't be. For reference, just take a look at the varying spring and damper rates being run on the Z's here. Also look at the varying roll bar sizes.

There is no one perfect setup. Everyone likes their car setup a little bit differently. Driver A might like to run a super stiff rear bar to keep it flat, but Driver B might like to run less bar to get some more roll. It's entirely subjective.