Think 650b x 47c “road plus” was a compromise for smaller clearance frames.
Yes – was the biggest tyre that would fit most CX/gravel bikes on the market then with road chainsets/chainlines. For mixed rides with a road bias I think it’s a good size. G-One 2.35s are great off-road but I’m not sure about on road, they get a bit self-steery on bad tarmac and cornering really lost the ‘on an edge’ feeling you get on a 25-25mm, it’s much more of a side to side roll if that makes sense. You get used to it but it’s good to go back to a 50mm tyre. I’m settled on 50mm or so being up to anything a drop-bar, road-ish position bike can handle well, within normal rides, but wouldn’t rule out bigger. Pros/cons etc.
