On my Open Pro rims they are quite nearly the same, when inflated to about 90psi. The Roll-y Pol-y are perhaps a touch plumper. The Michelins may be more like 26 or 26.5 rather than 27. But I'm almost certain that they aren't accurately 25, as labeled.
I've seen others report with digital caliper accuracy that the Pro Race even measure 27.5 on some rims. Whatever. What's important for me is that the Michelin are great on the Romulus (at least for my roadie purposes), and that despite possibly being 1 mm narrower than the Roll-y Pol-y, they do not ride any rougher, so long as you don't exceed 90 psi. On Dec 28, 12:52 pm, Steve Palincsar <palin...@his.com> wrote: > On Mon, 2009-12-28 at 09:59 -0800, Aaron Thomas wrote: > > Among my favorite 27mm offerings are the following: > > > Michelin Pro Race 25mm (actual 27mm) > > Rivendell Roll-y Pol-y 28mm (actual 27mm) > > I've used those two tires for thousands of miles. They're not the same > size, not even close, in my experience. -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To post to this group, send email to rbw-owners-bu...@googlegroups.com. To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en.
