I have a couple of road races coming up with significant amounts of gravel sections, so I have been trying to maximize the tire space in the frame. The split for one race is around 15% tame gravel/85% asphalt and 45% tame gravel / 55% asphalt for the other.
I have been looking for high volume road tyres with lower rolling resistance compared to gravel tires.

I currently have Vittoria Terreno Zero's in 32c and they are very puncture resistant but noticeably slower than a road tire (as it probably should be). Very good if there is a high risk of punctures or a need for more grip.

Schwalbe have a 34c model of their Pro One Evo TLE which I picked up. I mounted them on Light Bicycle WR45's which are 25mm internal (hooked). They measure 33,5mm.

Surprisingly there is still a bit of space. Obviously they are narrower than advertised but it probably also has to do with the lack of knobs and that the wide rim gives the tire a lower profile.
I would say if you have wide rims the bike could probably handle a 35mm WAM slick tire if you can live with minimal mud clearance. Anyone wanna sponser me some Rene Herse Bon Jon Pass  ?

Hi guys, thank you for all your advice, here is finally my bike mounted.
Very happy final weight:7 kg pedals.
Two exits the first two hours per setup, the second over 4 hours and a drop 1600 meters, excellent sensations.

did you notice anything funky with fd shifting? i have etap axs and the braze on mount is slightly slanted so the fd has to sit higher than manufacturer recommendations bc the chainring will hit it, so the shifting is a little wonky on mine, hit or miss.

...My only complaint is that their packaging is too fancy. They send the bolts in a metal box which is padded with form fitted foam. In my opinion it is just too much waste. I would have been perfectly happy just receiving the bolts in paper bags.

I actually took off the stem so am confident there was no force compressing the steerer.

At first I just wanted to switch to something "safer", however now it's more out of necessity as the stock expander is not gripping well internally and slipping up when I compress the headset (using carbon paste as well).

I actually took off the stem so am confident there was no force compressing the steerer.

At first I just wanted to switch to something "safer", however now it's more out of necessity as the stock expander is not gripping well internally and slipping up when I compress the headset (using carbon paste as well).