I really don't know if the tires are available in 700C. White side tires in sizes 24 & 27 are hard to find here. You get the chance to have them from old stocks of commercial bicycle shops. Sometimes importers of surplus bicycles have the chance to buy old stocks in Japan. So far local tire manufacturers here produces size 14, 20, 26, & 27 but the quality is not so good. It's better to buy from surplus bicycles to get the parts you need.