If you're never going over 20kmph and you have big heavy DH tires on, you will still be experiencing a lot of rolling resistance for the majority of your ride.

If you're never going over 20kmph and you have big heavy DH tires on, you will still be experiencing a lot of rolling resistance for the majority of your ride. Considering my ride home is done at like 10-20kmph on a set of Maxxis Minions, rolling resistance should be making up ~50% of my total resistance. At 50psi I find I'm mostly on the centre of the tire, so not even rolling on the full 2.8" width like I would be at 20psi, which I can feel a difference in. CyclingAbout has a great video about aero and bikepacking which is a good intersection of what we're talking about here, though he's using fast rolling tires: > By the time you’re cycling at 30KPH, as much as 90% of the resistive force experienced comes from aerodynamic drag. And it’s not until you get down to 12KPH when rolling and air resistance are equal. https://www.cyclingabout.com/fascinating-aerodynamics-bikepacking-bicycle-touring/ https://www.cyclingabout.com/fascinating-aerodynamics-bikepa...