Originally Posted by
lostarchitect
Don't forget to include the weight of the bike. If you're 140, the baggage is 20 and the bike is 25, that's 185. Around 60% of that (111) is on the rear wheel. So according to the chart, that 28mm tire should be at around 82 psi, which sounds totally reasonable to me. Pump it up to 85 or 90 if that makes you feel safer, but you'd be fine at 80.
Thanks! I did forget to include the bicycle weight. That means, though, that the front gets about 75 lbs. According to the chart, that's less than 60 psi.
I currently have about 90 psi on both front and rear. I'm fairly comfortable with that setup, but should I lower the front?