For road races (including crits), I ride a 2014 BMC Tachmachine SLR02. I love the frame, it’s snappy, it’s light, the bike climbs well, I like everything about it. Except this: the tire clearance in the back is so small that I can only run 25mm tires in very dry and clean conditions. (I actually raced a crit last year where the water from the road froze between the tire and the frame and was rubbing the entire race).
What I ended up doing was to run 25mm in the front and 23mm in the back. My thinking (based on pretty much nothing) was that running a slightly wider tire in the front with slightly less tire pressure would be beneficial in cornering even if the tire in the rear is thinner and harder. But I wonder if any of you have more insights into this? Does this have any disadvantages?
And no, I’m not buying a new bike right now.