Why choose a gravel bike rather than a road bike with fat tyres?
A gravel bike is not just a road bike with fat tyres. Even if it shares DNA with a road bike, gravel bikes have their own unique characteristics.
On our GRVL 120 gravel bike, we have changed the frame of our RC120 disc by adjusting clearance (tyre space) for riding with a 700x38 tyre. It also has mechanical disc brakes.
On this gravel bike, we also used our tubeless gravel wheels in 23c, and a single chainring drive train.