It looks like a handy service, bit I wonder if they they can realy make money off it. It costs 400 yen to repair a tire, plus an additional 100 if they have to come to you.
Long-time resident in Japan (since 1993) but originally from Canada. Has written guidebook chapters, magazine articles, tons of blog entries and even a book about less-known aspects of Japan. In his free time, he loves photography, cycling, and exploring interesting and obscure places around the Kansai area.