They are VERY stable IMHO at high speed and cornering as I had these on the vert and drove them 50+ miles one way to the track many times.
My 97' was on the lift so I never got tho try them on that before I sold them
Jeff bought them on the wheels so he can speak to them as well.
The PS2 replacment Pilot Super Sports I just tested in Dubai are at least as sticky as the RA1s I run on the street now.