My wife would like some wider tires on her new bike. She currently has a nice set of Open Pro rims laced to 105 hubs. Do you think Conti Contact tires in size 700x37 (the actual mesurment is 700x34) would be safe? I'm worried about the tires being too fat for the rim and popping off while she is bombing down a cobblestone street. I mounted the tire on the rim at the store before I bought it and drippled it like a baketball for a while with no ill effect. What would you do if it were your wife? BTW I can't find any wider 700c rims or thinner tires, except 700x23 Grand Prixs. Thanks.