Bob Jackson (Vigorelli, etc)

I just about managed 32c with a tight fit (some 32c are bigger than other), so as long there's enough track end length, and careful installation, 28c + mudguard are entirely possible.

I definitely need 700*25 with mudguards, but 700*28 will be great. I can use a half link chain to fine tune the track end length. I definitely need to add mudguards since I am going to ride it all year and I am going through some parks where they use a lot of salt in winter…

A Vigorelli with the proper mudguard fittings? I run SKS Cromoplastics and 25C tyres (Open Pro rims) on mine. It's no problem. You could probably fit 28C in but the limiting factor is the rear bridge - unless you've specced the rear brake upgrade the fixing bolt attaches from underneath, i.e. through the mudguard, so the bolt head protrudes through on the inside of the guard and restricts the amount of clearance. You might be able to use a lower profile bolt or a different method of attaching it if you really wanted larger tyres.

Let me know if you want pics.

I am not using a rear brake on my current bike but I am going to ask for a rear brake option on the Vigorelli in case I need it in the future. I build my wheels with CXP22 rims which is 20.5mm wide, while Open Pro is 19.6mm so it may give a bit more space.

Some pictures will be much appreciated!!!