We recently received prototypes of the new Grand Bois “Lierre” (Ivy) 650B x 36 mm tires. A few readers already spied them at the Oregon Handmade Bicycle Show, mounted on the bike displayed at the Bicycle Quarterly stand.
When 650B first became a popular wheel size again, many bikes were designed for the excellent 650B x 38 mm Mitsuboshi “Trimline” tires. Mitsuboshi left the bicycle tire market more than five years ago, leaving many 650B riders scrambling for medium-width tires. With similar width and tread thickness as the Mitsuboshi, the “Lierre” is a welcome addition to the 650B market.
Like all Grand Bois tires, the “Lierre” was designed to offer excellent comfort and performance, combined with good longevity. The prototype’s tread is a bit thicker than the production version will be, so we do not have accurate weight and riding impressions yet. The width is a true 36 mm, and probably will grow by a millimeter or so over time. Thus, it is right in the middle between the “Cypres” 650B x 32 mm and the “Hetre” 650B x 41 mm tires.
The tread pattern is inspired by a 1950s Hutchinson tire. The Grand Bois “Lierre” will be available in late December 2010 or early January 2011.