Originally Posted by Triguy

You're using logic, I've seen data. The limited data I've seen, there was no difference. I know why wider tires roll faster. I know that wider rims make tires slightly wider. I however, have seen data which did not show any difference. I did not ask for logic, I understand the logic. I asked for data.

As far as I can tell my original assertion is correct. The only certain reason(proven at this time) wider rims are faster/better is that they create a faster system with the tires the end users have decided they will use, ~23mm. I'm of course not referring to shape, I think the new blunter trailing edge would be effective for whatever tire size one decided to design around.

I know my requests for data will go unheard. When people asked Hed for data, Hed went silent. However, Flo feel free to send a wide rim and a couple of tires to Al Morrison, I'm sure he'd be more than happy to try.