Originally Posted by
cpach
It is interesting that the Gatorskin was slightly more than DOUBLE the rolling resistance of the GP500TL. I would think that this would indicate not a very supple casing. The ride quality seems to back this up as well.
I have also been reading that RR on a drum is not a good real world test since none of us ride on a steel drum or really smooth asphalt either. Silca makes a good point in their almost impossible to find blog posts:
https://blog.silca.cc/all
that RR becomes secondary when you consider road surface roughness and all of the energy wasted bouncing you up and down. Their testing shows that what you really want is a supple casing and it is better to run 10psi under than 10 psi over the recommended pressure (for your weight).
There has also been a similar discussion on tire casing suppleness here:
https://www.renehersecycles.com/