Probably a silly question, but I'm putting on new tires that are 700x34, 60-80 psi. Tube sizes at Performance are 28-32 or 35-38. I'm thinking the smaller size should be ok to expand to the 700x34 tire, but don't want it to be too thin.
These are the standard Forte tubes which I've used without problem for years on road and mountain bikes. I don't race, but do ride off road on some local mtn bike trails that have some gravel and rocky sections.