I recently received a pair of Sunlite Thorn Proof tubes, 700c. Now I'm confused, as usual. When placed on my 700c rim, there is a 4 inch overlap, making it impossible to mount the tire. I'm use to having an inch or two of overlap with standard tubes, but due to the thickness of these Sunlites, ANY overlap would make them hard to fit them into a tire.
Anyone with thick tube experience? What am I missing here? Are they even worth messing with?