As a follow up on the previous topic of scaling tire pressure with tire width via maintaining constant tire casing tension, I would like to refer to another blog post that discusses how to find a starting point for tire pressure based on rider weight.
http://flocycling.blogspot.com/2014/09/flo-cycling-tire-pressure.html
Since tire pressure is a combination of subjective as well as quantitative factors, the graphs presented in this blog post should be used as a starting point. Once the optimal tire pressure for a given tire width is determined, the prior blog post can be used to scale this pressure for different tire widths.
Michael Miu
Thanks for the post Prashant. The graph they show on the FLO site is the same as the graph produced by Michelin for years. Michelin tires have always had a maximum pressure of 8 bars (116 psi). I weigh 170#, and a tire pressure of 8 bars for a 700×23 tire works great for me. My Michelin Lithion 2 and Pro 4 tires both feel comfortable and grippy using narrow 19 mm rims.
I’ve been running wide rims for a year or two now (H Plus Son Archetype, 23 mm width). I originally tried using my normal 8 bars of tire pressure. I found that the wheels were a little bouncy especially over rough pavement. Now I use 7 bars for the rear, 6.5 bars for the front, and when riding over rough roads, I don’t bounce around as much. The setup is very comfortable with good road feel and grip.
Cheers,
Michael