Originally Posted by
icemilkcoffee
The simplest rule of thumb is : Fat rider Fat tire. Skinny rider Skinny tire.
For an explanation, consult this chart:
Pretty funny. Berton's calc page tells me I should be running about 112PSI in the rear and about 91 in the front. This absolutely flies in the face of all those "experts" who claim I should be running pressures much, much lower! I use trial and error to arrive at a comfortable and usable pressure, as always. For my tires and wheels I ended up at 95/100 front/rear. Just because I like the way it feels.