Originally Posted by

**3x5**
Hello, I'm having a similar problem. I bought a Schwinn second-hand, and replaced the back tire with a 26 x 1 3/8 tire, no problem. Then the front tire wore out, so I bought a new 26" tire. I decided to put this on the back and move the back tire to the front, but it wouldn't go on. I then measured the wheel, and sure enough, the front one is half an inch wider diameter than the back.

The rim of the back wheel measures 23 3/4" in diameter. The front is 24 1/4". The 26" fits just fine on the back.

Here's an odd thing, though: The front tire says on the side, '26 x 1 3/8 in, to fit Schwinn S5 and S6". So the tire seems to think it's 26". Should I try to buy a 26.5"? Any ideas? Thanks.