With a wide rim, you therefore have less tyre deformation. This gives you more grip when cornering and your tyre is less stressed and you get less rolling resistance.
Here, Schwalbe explains how rolling resistance is reduced:
https://www.schwalbe.com/nl/rollwiderstand
In addition, we use the new Hookless posnology on our Nighthawk38, Raptor55, Gravel Lightning 36-C, Gravel 42-C and all MTB rims.
This ensures an even better tyre fit and a weight reduction of +/-45gr per rim.
This results to a product that has continued to improve year after year and where previous problems are off the table. For example, the wheels have become more shock resistant and give more comfort on the cobbles, also the problem of overheating of the brake rim has been addressed. This by using wider rims and a specially developed brake rim with nano posnology that can withstand temperatures of over 230°C on its own test bench.
The rims are also all Tubeless ready some of which are already Hookless for an even better fit with the latest tyres.