When I asked which part of my bike for last summer’s Paris-Brest-Paris our readers wanted to hear more about, the answer was: “Everything.” So I’m writing a series of posts about the parts of the bike. I’ve already talked about the frame and the centerpull brakes. Today let’s look at the wheels.
When thinking about the wheels for my new bike, I started with the tires I wanted to run, since everything follows from that. It was tempting to go with a really huge tire, like our 54 mm Rat Trap Pass. Our testing indicates that they don’t roll any slower, but there are other compromises when your tires get wider than about 44 mm. It’s harder to fit a rim brake around them. Fenders with good coverage start interfering with the chain. Really wide tires can be more sensitive to tire pressure, and their huge supple sidewalls tend to get deflected more on road cambers.
For a bike that gets ridden mostly on pavement, over huge distances and often at night, 42-44 mm-wide tires seem like the perfect compromise. From that followed that my new bike would have 650B wheels. Why not 700C? Continue Reading →