[ACademic]

Reduced pressures will also enlarge the size of the flat spot that these tires tend to create after each drive. They always work themselves out after a couple miles, but the "whop, whop, whop" shake will be more pronounced when you run low 20's psi vs. mid/high 20's. My rule of thumb is above 25psi for purely the street and at/below 22 for any spirited driving.