I've never blown a tire (except two really worn tires that were cording) but I cracked two of my ZHP rims. I agree 32psi is too low, especially with 18" rims. I try to run my fronts at minimum 34psi and usually aim for cold pressures of 36F, 38R. It rides harsher than 32 or 34psi but protects my rims. With 17" rims I normally aim for 34psi cold.