Join Date: May 2004
Location: Southern California
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
My vote is to go with the smaller of the two.
Right now, I am running tubes for 26x1.9-2.2 in a 26x2.35 tire.
I don't think innertubes are an "exact science". There is seems to be enough elasticity and manufacturing variation in tubes to allow for poetic licensing with tubes. Also, tire sizes seem to vary between manufacturers, and the volume of the void is not exact.