Originally Posted by
nowherebound
I originally had my head and heart set on 35mm tires. From what I have read, that seems to be the sweet-spot for tires for a mix of urban, gravel riding paths, and occasional section of muddy forest paths -- that's mostly what I'll do. Maybe occasionally a 20-40km+ day-ride with the family.
Waffled back and forth on whether to post earlier. My only worry in what you list are those "muddy forest paths". The Sirrus is a flat-bar road bike, and is not what I would think to normally take onto singletrack or into mud. The thing is, what people mean by mud can vary by a wide margin, and so can the smoothness (or lack thereof) of those "forest paths".
You can probably get away with a smooth path. Avoid mud though, because cleaning the bike afterward is a pain. Mud is horrible on a drivetrain. Despite the common image of mountain-biking through mud, I stick mainly to dry trails.
You'll love the Sirrus on those 20-40 km rides. Roads and bike paths are where it will shine. IMHO.