We bought a motobecane immortal road bike..we have had 9 flats in the last couple months.. we felt a little shard and filed it down and that worked for a bit but then the flats started again. We had 2 in one day today. The back wheel only.. ETRO 622×12 700cx/23c safety line aluminum alloy. Weinman DP18 Ultimate Power. Is there another wheel that we could put on this frame..my husband weighs 218 lbs would that matter? He loves the bike. I've had a spirit for 4years..only 2 flats. Something is wrong with this wheel. What can we do so he can ride this bike.