I recently started building a bicycle around a frame I discovered is designed for a smaller 650b in front. That is because with a 700c wheel, there are not really any brakes with short enough reach and even a slick tire looks awkwardly close to the fork crown. The frame is a triathlon variety and I understand this is deliberate to a achieve a more areodynamic lower shape in front when riding. I am currently looking for a decent rim for this application with a couple criteria being rim brakes and black. Has anyone heard of the Brn Pro rim or would it be better sticking with something like the Alex DM18. Is anyone else riding with a smaller wheel in front / are there decent road tires available?