I'm bringing my road kit (shoes, pedals, helmet, etc) with me on a 3 month vacation in Tokyo starting next week. I'll need a 56 cm men's road bike. Any tips on buying a used bike with the intent to sell it before I return home? I will be staying Noborito-cho, Koshigaya-shi, Saitama. I have one Japanese friend in west Saitama that knows good routes that I can ride with him. Also are there any group rides? Thank you!