As I understand it the higher pressures for road tyres means that it’s not always recommended.
I’m looking at running 32mm road tyres on 20.2mm internal 25mm external alloy rims and trying to understand where the change over point is. I think it’s around 30mm as most world tour teams are on 30s running tubeless.
Won’t be hookless rims (obvs as alloy) and if I do build carbon will avoid hookless then as it seems unproven currently.
As someone running tubeless on 25, 28, 30 & 35c road tyres.. I don’t really see a cut over but caveat, I’m quite light, even the 25c don’t go above 80psi. For 32c I’d say there is a good case to run tubeless.
The changeover point depends on what pressure you need to run, because at higher pressures 80-85psi one of the problems is the sealant jets out of a puncture hole so fast it doesn’t ever seal. I
I’m 80kg and have been riding on 32mm tubeless for several months at 60-65psi with no issues. I had been running 25mm tubed tyres at 80psi.
The smallest I ride is 28s and run tubeless for all road tires.
I’m still rim braked so the biggest tyre I can run is 32mm and that works fine tubeless. I run 40-60psi and can’t see anyone having to run a high pressure.
First question should be why run such high pressures that this becomes an issue ?
One of the benefits of Tubeless is being able to run much lower.
Im 58kg and run 700x32’s at 35 psi
700x28 at 45 psi if on public roads and 60 psi when on closed circuit track (Not Velodrome wooden flooring)
I run 30mm tires on 21mm rims at 60psi, with a rider weight of 80kgs
The change over point is 72.5psi, but that only comes into play with hookless rims, pretty much exclusive to carbon rims.
I use Silca’s calculator and run my 32’s at 60 for road training.