Originally Posted by
mrund3rd09
I know this subject has been touched on before, but I did searches and I'm still confused. I own a '84 fuji del rey with 23 mm tires. I weigh 165 lbs and I pump up 80-90 psi on my tires because the pressure gauge on my pump only reads up to 100 psi, and the tire indicates a maximum capacity of 100 psi. However, most people on here go way above 100 psi to avoid pinched tires.
Should I get new tires and a new, better pump? Please shed some light on this
For 23mm at 165, assuming a 40% 60% weight distribution, the chart puts you at about 70 psi in the front, and 105 psi in the back. But it isn't gospel, just a starting point. Are your teeth rattling out of your head? Lower your pressure. Are you getting pinch flats? Raise the pressure.
Back in the bad old days, people used to just pump up their tires and give them a squeeze with their thumb, and say "that's about right" and never give it a second thought, so don't worry too much about it.