I run 23c Armadillos on my roadie. I have been reading that they have a high rolling resistance. I emailed Specialized and asked them if they had white papers on their testing data for rolling resistance or at least something to give me a benchmark to compare 'dillos to other tires.
This is the response:
I'm not sure what you are looking for exactly, sorry. We do not have a quantitative rolling resistance value for the tire if that is what you are looking for... sorry. If you would like to compare it with other models, I can give you an educated guess as to which tire will have more or less rolling resistance in comparison.... if you have any further questions, feel free to write back or call.
No quantitative data and an educated guess.
I read somewhere that there is an independent company in Sweden or Norway that is testing tires for rolling resistance.
Does anyone have any analysis of rolling resistance of certain tires? Does anyone know if any manufacturer has this information or if they just say this model rolls faster than this model.
Thanks in advance.