Originally Posted by
Jeff Neese
The bicycle in question is a Reynolds 531 frame, ridden only on smooth roads. There's no such thing as a harsh ride with this bike. Regarding rolling resistance, there are more variables to consider but in general, higher is better. (Smaller contact patch). Here's an interesting article, among many others. Again though, when you're talking about rolling resistance there are a lot of variables including width of the tire, the tire construction itself, and of course the smoothness of the road surface.
Resistance is futile: How tire pressure and width affect rolling resistance
Apparently you've not read the article; here are a couple quotes:
Using roller data from Al Morrison and on-road data from Tom Anhalt, you can see a clear breakpoint in the graph where rolling resistance appears to increase sharply (around 115psi – and note that this was a relatively smooth road). Rougher roads result in a breakpoint at significantly lower pressures.
The graph below shows how much worse things get with rough pavement (the red line) – with the fastest setup at a low 60psi.
If you're running 120psi or more, you're almost certainly losing on the balance sheet.
Got any more articles that refute your own argument?