^thanks, I figured it might have also been tire pressure... even then, doesn't it take like 90psi to pop the bead when first mounting? In daily driving, I don't think tires can flex enough (above 90psi's worth) to get them off the rim? I'm probably mistaken though...
also, what do you guys recommend for tire pressure? Should I stick close to the max of what it says on the sidewall?
Thanks for all the input so far!