Seeing several posts asking for tire width on the Ultimate. So here is my 2022 CF SL with 35 mm studded Schwalbe Marathon Winter. No, I didn't ride it, but there is
Schwalbe G-One RS 2022 presented – The fastest gravel tire in the world? | GRAN FONDO Cycling Magazine
Schwalbe's new G-One RS gravel tire is made for racing with a focus on speed - CyclingTips
Bike Tires | Schwalbe Tires North America – schwalbetires.com