ValidusVentus

Here are a few impressions from the tires I have used:

Mich PSS: Great street tire that also works very well on track. Best dry and wet grip out there. Pricey. Good heat capacity but will get greasy with track use on hot/sunny days (90+). Moderate low temp performance.

S-04 Pole Positions: Very good street tire, only slightly less grippy than the PSS. Relatively poor heat capacity. More than just a couple laps on an autocross course in mild weather and they got greasy. I would not track these on a dry track. Good wet performance and low temp performance though. Of note, small section/tread width (visually noticeable on vehicle) and 4-5 lbs heavier/corner than a PSS. Very good bang for the buck street tire.

Continental DW: softer sidewall, less feel but otherwise pretty similar to the S-04s. No track experience.

I recently got to drive a stock Nismo as full tilt and it does have quite a bit of understeer (seemed more than base/sport), crisper handling though of course. I second a more square setup. Just try to keep your tire outside diameters the same to avoid messing with the speedo and your F/R brake torque balance.

__________________
Mods: Dedicated caged track car, lots of things. ||| Valkyrie Autosport |||