Originally Posted by
Coal Buster
Use only the suggested numbers on you door panels for your car tires. That number has been set in relation to the roll over tendencies of your vehicle. Whatever performance benefits you may get from over or under inflating can be hazardous to your health. If the min/max value on your chosen tire doesn't fit the stated values on the door panel then choose a new tire.
Uhh... what? That number on the door panel comes from a compromise of several factors including ride, fuel economy, performance, and tire heat created from highway driving. Rollover has little to do with it except in a tall top-heavy SUV. I guarantee you won't get a Corvette to roll over if you inflate all the tires to 10 PSI or 60 PSI (though you will certainly have other serious issues.)
That number is simply a guideline that can (and should) be altered to optimize the desired factor if you know what your goal is.