Originally Posted by
ItsJustMe
A friend has an eBike that has a computer on it that can tell you exactly how many watts the motor is drawing at any given time. he says that 10 PSI difference in the tire makes a HUGE difference in the amount of energy required to push the bike at any given speed.
I assume this is on a tire with a max rating around 60psi or so. If so, then I concur. 50psi in my MTB tires is a world apart from 40psi.
On my road tires, there's only a slight perceived difference in effort required to maintain the same speed when going from 110 to 120psi.