Changing your driving style is probably better than just blindly adding air pressure. I switched to the higher pressures not because of rollover but because I simply liked a snappier feel. Even with the stock 32f/29r I never roll over during spirited driving. Smooth lines equals zero rollover under most circumstances.
My first autocross season, even when I was running 45f/45r, I still rolled over because I didn't know proper braking and cornering. Now that I've learned proper braking and lines, I can easily autocross on stock pressures and just barely roll over. I'll be slower but being smooth is more important than being fast when you're first starting out.
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