In West Newton Since 1952 - On The Web Since 1995

20 x 1 3/4" Schwinn size Bicycle Tires from Harris Cyclery
(ISO/E.T.R.T.O. 419 mm)

419 mm / 20 x 1 3/4" S-7 tires

This is a size used on older Schwinn children's bikes. Often confused with the more common 406 mm size.

I.S.O. Size	Traditional Size	Brand	Model	Price
44-419	20 x 1 3/4 S-7	Pyramid	S-7	$24.95	Special Schwinn size, not to be confused with the more common 406 mm 20" size.
	20 x 1.75"	Inner Tube		$4.95	This is a normal 20 inch inner tube...this wheel size needs special tires, but does not need special inner tubes.

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