[OND]

In my experience, the front tires first start singing, then start screaming, then start vibrating and shaking the steering wheel.

The third case is probably what you are feeling. It happens when you way overcook the corners and add too much steering input. I guess it would happen less with higher pressures and stiffer sidewalls, but it is a pretty good indication of overdriving the front end, so I'd fix that first.

I started using 32psi cold based on the suggestions on the forum and it works really well for me. Gives me around 38-39psi hot.