Originally Posted by
telcoserf
The 24 x 1-3/4 I have are literally a couple inches too small, bead diameter-wise, when you're trying to put them on the rim.
The 24 x 1-3/4 tires are meant for a Schwinn S-7 rim (ISO 25-521) with a 521mm bead seat diameter, which is 25mm or a full 1 inch less than the S-5 or S-6 rim. You simply cannot mount these tires on your rims.