Sono altre congetture, magari vere, magari verosimili, magari sbagliate.
Ci vedi dentro qualche dimostrazione, qualche misura sperimentale?
Guarda
A detailed rolling resistance comparison of the Grand Prix 5000 in the 23-622, 25-622, 28-622, and 32-622 sizes
www.bicyclerollingresistance.com
Leggi le conclusioni di uno dei siti riferimento per la misura delle resistenze al rotolamento, riporto:
"We feel the ultimate test is adjusting all tires to the same comfort level. When all tires are adjusted to the same comfort level, rolling resistance is nearly the same (0.2 watts max) for all sizes of the GP 5000.
...
If you want to go as fast as possible, choose your required comfort level and pick the smallest tire that can provide that comfort for you."
Poi mettete pure il 72 pompato a 2 bar... Non ho obiezioni