I just bought an early Motobecane Grand Jubilee on the 'Bay for my wife. The original owner didn't know many specifics about the bike, and I'm hoping that some of you Moto-philes can help me out. Sorry I don't have any photos, but he says it was purchased new in 1970. Silver and red color scheme, Stronglight 93 crank, Huret derailleurs front and rear, what appear to be Weinmann centerpull brakes. Would this frame be partial 531, full 531, or Vitus tubing? I'm assuming 27' rims rather than 700c? Any recommendations for new tires for this bike? How wide am I likely to be able to go with the tires here? I'm thinking of replacing the drop bar with something more upright to make it something a bit more of a comfortable bike for my wife. Trying to get her re-involved in cycling. Thanks in advance!