Originally Posted by
thousandwords
Zona is not that thin though, I think.
The tubes I'm using are double oversize, .7/.5/.7 There are a lot of variations of Zona though. Spirit is usually .45 in the center. Actually, for your first several bikes, it might not be a good idea. Most people with experience would suggest .9/.6/.9 I think. I have always thought for your first couple of frames, spending more than you have to is just a waste of money. I suggest the cheapest possible tubes, which also tend to be thicker