Originally Posted by
79pmooney
2) Run front tires around 5 psi less than the rear. Various "exact" sources will tell you to go a lot lower for optimum comfort and rolling resistance for the weight you place on the front tire; usually considerably less than you have in back. But - should you ever find yourself behind a rapidly slowing car, truck or even another rider, braking hard 'cause you have no choice and a p0othole or rock appears from under that vehicle or rider. Suddenly, that almost rear tire pressure will look like a G**send!
This 5 psi less in front was routine advice from veteran bike racers to newbies when I started racing 50 years ago. Been doing that (with a gauge or by feel) the whole time and have never regretted it.
Modern pressure calculators like SRAM and Silca also advise running approx 5 psi less front pressure.