I'm a huge fan of the wider rims...and yet, I think the hype is way overblown.
I tend to agree. It all sounds like a variation on a theme by the biking industry.
With tons of contradictory data out there it is hard to tell what's actually faster and what's not.
They make it sound as if a 27mm tyre matched to an equally wide or wider rim is going to make you faster. That's just not possible.
They also claim a wider tyre is automatically faster than a narrower one. Not true either as that wider tyre may well present a lower Crr or not, it will inevitably present a far larger frontal area than a less wide one which will slow it down. Bollocks once again, I'd say.
What good is a lower Crr going to do if you're bound to lose the benefit by increased drag anyway?
The key is to find and match the right set of compromises for your race. Right pressure, right rim width, shape and tyre and so forth set to achieve a certain purpose.
Saying this or that is the be all is just plain short sighted.
Generalising on this is hopeless. Everything has to match a certain goal.
No law of physics has changed. We all know a more supple tyre will behave just the same as a wider tyre with a less compliant yet wider casing.
Yet now they want you to believe this less supple and wider casing is more aero (it might be under controlled circumstances) is going to make you faster no matter what?
All previous tests are invalid overnight and all laws of physics are non-existent at best?
And yes, wider casings are intrinsically better rolling. They also catch more wind. Always have always will.
My plea is basically for a better comprehension of basic laws of physics, applied laws of physics, a better comprehension of where and how to apply this logic, with equally applied logic. Not just blindly following a fashion for no good reason
Sounds complicated? It is not.
What you want is a better tyre. What they offer is a wider tyre.
A wider tyre does not make a better tyre. Period.