+1.
High pressure is a key reason road bikes roll better, since rolling resistance is reduced with pressure on the flat.
.
Hi,
In real life it isn't, its only true in a velodrome. On real roads the optimum tyre pressure for
good rolling depends on the average quality of the surface, and the lower the quality the
faster overall are fatter tyres run at the correct optimum lower pressures.
Its also a myth pumping tyres really hard makes them faster, they might feel fast but in
fact that makes them tiring, your body has to absorb the energy transmitted by hard tyres.
My bikes are fitted with fatter tyres, run at optimum pressures for good rolling and comfort.
Even so when I hit a section of nice smooth tarmac the better rolling is night and day obvious.
My bikes also roll better on wet roads, which is something I didn't really expect to be the case.
What I can't imagine is what other peoples bikes are like on general roads. As a convert
to fatter tyres, they must be putting up with a lot a discomfort they really don't have to.
Your tyres are your bikes suspension and it should be tuned optimally for the conditions.
The more you weigh the fatter the tyres you generally need on typical roads IMO.
I'm average weight, 30mm rear and 32mm front tyres on the road bike, 47mm on the folder.
Optimum pressures are relatively low, about 60psi on the rear of the road bike and about
40 psi on the folder, both fronts lower to match the feel of the rear on bumps and the like.
On 23mm tyres I'd have to run the road bike rear at 100 psi + and TBH
though faster on nice tarmac, IMO a poor choice on normal roads for me.
rgds, sreten.