which is why hardly anyone makes anything under 2″
Eh? there’s loads out there – for example WTB Vulpine 1.9, Panaracer Mach SS 1.95, Continental Double Fighter (a bit heavy though)- all of which I have used and are excellent fast rolling tyres but with good side knobs for grip in corners and rocky stuff.
Wider tyres have less rolling resistance than narrow ones (at the same pressure) due to the different shape of the contact patch. FACT. Narrow tyres are only faster above the point where air resistantance has more of an effect than rolling resistance.
Don’t know what thats all about! Sounds like NON FACT to me. Use higher pressures with narrower tyres and rolling resistance is lower and wtf has air resistance got to do with it??
The OP is asking for narrow, fast tyres for hardpack, gravel etc the ones i’ve mentioned above do that and on road too. And that’s from experience not some theory. And the WTB and Panas are light too.