I recently bought some studded Innova tires and when I wanted to put them on, I realized that the inner diameter of the tires is about an inch less than that of the rim. Needless to say, there was no way to put them on. The innova tires are marked as 26x1.75, the tires that I have on right now are 26x1 3/8. I thought that 26 was the measure of the inner diameter. Am I missing something here, or did they just mess up when they made the tires?