exxxviii wrote:
One key thing to look are shoes with very high sole rigidity. In other words, spend the bucks on shoes with carbon soles that flex the least.
As a basic physics thing, if the sole is rigid, then the shoe-to-pedal contact area is irrelevant and will evenly transmit the force across the whole sole of the shoe. If the sole is not rigid, then the shoe will flex fore and aft of the contact area and transmit force to your foot at uneven points of pressure.
Yep, this guy gets it!
Just from my experience- I have an old plantar plate tear that gave way to 2nd met problems, drifting toe, metatarsalgia, the list goes on...
What works really well for me: the full-carbon soled Bonts and Look cleats with shimano PD- style road pedals. Spend a bit extra on your shoes, they will last for many years. If you like the fit of the Bonts, upgrade to the Vaypor or similar with the full-carbon sole. That being said, and to echo what exxxviii said, if you have a true rigid-soled shoe the cleat/pedal size shouldn't be the issue.
I have also found that the shape of the Bonts in the forefoot lets my toes spread out a bit more naturally. Again, just my experience.