Hi, I'm getting ready to buy a triathlon bike, or a road bike and convert it to a triathlon bike. I have some questions about sizing. I'm 183cm tall, and I have measured my inseam, myself and at a bike shop here in Taiwan. I have been fitted for a large frame road bike, which makes sense, but I have read and heard that tri bikes can be smaller than road bikes.
There are tons of bikes here in Taiwan that are Medium frame and I could pick and choose from many at a good price. However large are much harder to find. If I need a large, I will just shell out and search harder, however, I often see tri riders on TV and youtube, who are riding a frame that looks smaller than I look when riding the large frame. I have long arms BTW. Any advice?
Should I just try a med frame in the store, and see if it feels comfortable? Is there any other way to be sure about the measurements?
Again here are my measurements
height = 181cm
arm length = 65cm
ground to torso = 150cm