In West Newton Since 1952 - On The Web Since 1995

20 inch fractional Bicycle Tires from Harris Cyclery
(ISO/E.T.R.T.O. 451 mm)

451 mm / 20 x 1 3/8" / 20 x 1 1/8" tires

This is the size used on BMX bikes for light riders, some folders, some recumbents. Often confused with the more common 406 mm size.

I.S.O. Size	Traditional Size	Brand	Model	Price	Description
37 x 451	20 x 1 3/8"	Primo	Comet	TRM46 $19.95	An excellent skinwall street tire, with a very fine chevron tread pattern.
37 x 451	20 x 1 3/8"	Primo	Comet Kevlar	TRM47 $27.95	As above, with a puncture-resisting Kevlar belt.
28-451	20 x 1 1/8"	Schwalbe	Stelvio	TRM44 $32.95	A narrow, high-performance road tire.
	Matching inner tubes, $4.95, Presta or Schrader valve.

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