I'm looking at a Mavic wheel that's 19mm wide I.D. According to Performancebike's sizing guide, that should be absolutely fine for a 700x35 tire. In fact, 35 should be in the "sweet spot" for that rim. But according to Mavic, it should take nothing narrower than a 700x38.
What's the deal? Is Mavic wrong? Or ultra-conservative? A 19mm wide wheel is only 4mm wider than a normal road wheel. And, according to Mavic, neither wheel would work for tires between 29 & 37 wide!
Does somebody sell a 17mm wide wheel or does somebody at Mavic hate 32, 34, and 35 width tires?
Was I mistaken in thinking this is a minimum tire width of 1.5 inches? (i.e., 38mm?) Maybe this is expressed in multiples of the rim width? That seems to make the most sense but, other than the fact that this is pretty close to the standard multiples, there is nothing to indicate that. If this is expressed in multiples of rim width, we're talking 28mm to 43mm. That makes a LOT more sense.