Tyres for track

Another old wives' tale surfaces.

Because narrow tyres have longer contact patches (see: Why wide tyres have lower rolling resistance), they actually increase your trail by placing the hindmost contact point further behind the projected steering axis, thereby slowing your steering.

Im comparing how my bike handled with 23&23 and 20&23, the contact patch wont be longer if the psi is higher than with the 23mm so trail shouldnt be effected, the total surface area of contact patch would be smaller, also the lighter 20c tyre would make the front wheel feel 'flighty'