Grand Bois 42mm 650b tire - red

Grand Bois 650b 42mm tire in red

Grand Bois 650b 42mm tire in red.   650b is a great size - and believe it or not, the 42's are the fastest of all the 650b tires currently made! This tire is perhaps just a tad slower that a top-tier 700c, and seems to roll about as well as a mid-line narrow 700c. You really can have both comfort and speed.