Rene Herse launches 32-inch TPU tube as the big-wheel movement gathers pace

Rene Herse 32" PTU inner tubes.

In further evidence that a wave of 32-inch bikes could be coming, Rene Herse has launched a TPU inner tube specifically for the emerging wheel size.

Thirty-two-inch wheels, built around a 686mm rim diameter, have been one of the bike industry's biggest talking points this year, appearing on prototype gravel and mountain bikes at some of the off-road world’s biggest races and industry shows.