Originally Posted by FIVE ONE SIX
so what?!?!? just because they're rated at 120 psi, doesn't mean they need to be inflated to 120psi, and higher pressure doesn't necessarily mean faster when you take normal road conditions into consideration...
As I said, if you read the article, low width tires need to be pumped up to higher PSI compared to high width tires to attain any reduction in rolling resistance. Comparing a low width attack tire and a 24mm tire is unfair at the same PSI making the chart's results less than solid.
I would take all the info on that chart with a significant grain of salt, especially without a better description of test conditions and rationale for them.