I totally agree. As our research has shown, tire pressure is much less important than most of us used to think. This is especially true with supple tires. When we tested a Vittoria CX, it no longer held its line in corners because the sidewalls collapsed before the rolling resistance goes up significantly. These 25 mm tires had roughly the same rolling resistance at 70 psi as at 130 psi, and everywhere in between.
So start with Berto's chart <http://janheine.wordpress.com/2010/10/18/science-and-bicycles-1-tires-and-pressure/>and then experiment. If you feel like you could let out some air to get a more cushy ride on bumpy roads, do so. If you feel the tire sidewalls starting to collapse under hard cornering, increase the pressure a bit. If your tires feel great, just ride them. That's all. Jan Heine Editor Bicycle Quarterly www.bikequarterly.com On Thursday, June 26, 2014 8:09:30 PM UTC-7, Philip Williamson wrote: > > I think that's over complicating things. It's just a guideline. If you end > up with 25% tire drop instead of the ideal 15%, under hard braking on a > rough downhill... Who cares? > > -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To post to this group, send email to rbw-owners-bunch@googlegroups.com. Visit this group at http://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.
