The author has put a bit of work into the descriptive text:
"Photo 4:
The detail shot here shows the high-tech braking system of the bike, along with the uniquely textured tire, and a glimpse of the front wheel. These wheels are of chromed steel and weigh at least FIVE POUNDS EACH. It's a complete myth that you want a racing bike to be lightweight. Because this bike can go so fast, it needs these massive wheels to keep it tethered to the ground! And that super-smooth surface really aids in braking--on a wet day you can easily stop within a city block, as long as you're not going too fast."
Now I'm starting to wonder if I might want to ditch my lightweight sew-ups and get a set of chromed steel rims!!
Steve in Peoria