i think you should supply more info about your bikes. the difference between models.the specs on each bike. you seem to assume everyone is well versed in bike knowledge. i would have liked to have known before i purchased the bike that it had skinny,bald tires. don't get me wrong i love the bike! i am a 59 year old man that was looking for a good single speed bike.i found one at pure fix,but i felt like i was flying blind during the process of picking the bike i wanted. i hope this is helpful.