I should know the answer to this but figured I'd reach out to the infinite wisdom of the forumites here.
I'm running 25mm clinchers on my Mavic Cosmic Carbon Pros. The rims measure 25mm wide at the brake track. I'm running 700x36 clinchers on my Vision Metron carbon wheels that measure 27.5mm wide at the bed (disc wheels so no real brake track.)
What's the narrowest tire I could safely run on the Visions? 28? 32?