I want a new bike which is primarily a winter trainer but has the option to go off road once a month or so. My plan was to get a gravel bike with one set of road wheels and one set with wider gravel tyres. Now I’m wondering about getting a road frame with 30ish mm clearance and then a set of 650b wheels with gravel tyres that I could swap in. (The reason - much wider range of frames and better choice at my fairly low budget).
I’m pretty sure it would work, but anyone got any experience of doing this and any downsides to it?