I looking at some new all around cyclocross tires and can't find much info on 32 vs 34 widths. I'm around 190, so a bigger guy and leaning toward the 34's for that reason, but more guys seem to run 32's. Any preference?
I am a bigger guy too (6'1 - 195) and I raced on both 35's and 32's. Overall - I liked the 35's much better - they had more traction due to the increased surface area and took the bumps better. As far as course times go - I don't think the tire widths matter at all - unless for some reason there was a significant amount of hard-pack or tarmac on the course, then a 32' would give a slight advantage.