new and questions


I am new to this so I hope you bear with me

I have two questions/problems


I have an "old" CCM bicycle...I was told around the 1950s, how do I identify it?


lastly...the tires on this bike are 28x1.5...I order new ones...28X1.5 but they are too big....where can I get tires??


1.  Check the serial #, left side on the seat post collar, later ones had the # on the rear dropouts...check this out to match the ser#... 


2.   If two tires are marked with sizes that are mathematically equal but one is expressed as a decimal and the other as a fraction,  these two tires will not be interchangeable.   The rims on     Th

 The tires on your bike are supposed to be 28 X 1 1/2; if you got 28 X 1.5 they won't fit. I have put 700Cs on Canadian and British 28" rims, a squeeze but it works.  Check out Sheldon Browns article on tire sizing if you want to be enlightened, albeit, more confused.... 

3.  As to where to get 28 X 1 1/2 tires, perserverence, luck and the generosity of others are the watchwords.

Hope this helps


Damco company  here in Québec have some tires in this size. I mean 28 X 1 1/2  :)  I have a CCM with this size !.

Anon:  Can you provide an address/site contact for Damco?

D'amour bicycle et sports inc.


Lachine,Québec Canada




telephone: 1-800-363-8743


FAX: 1-514-637-7999

FAX: 1-800-639-7999

in regards to the 700c tire and "making it fit"

would either one of these work....700x 28c or 700x35c?


700 x 35c or 38c maximum


700 x 28c  being too small 

well I am having no luck with these rims 

the tire measurements are in fractions not decimal

the original tire is marked 28 x 1 1/2

new tires are marked 28 x 1 1/2 they are too big

I have since tried another tire marked 27 x 1 1/4 and it is too big

I have tried a 26  and it is too small

at a total lost here 

I am going to locate ther serial number on the bike and see if that leads me somewhere

There`s two sizes of 28 x 11/2 tires. The Canadian size which is the same as a modern 700c (622 rim) and the British size which is too large. From the sounds of it, you got`s the wrong ones! ~MERK

Ya I would just get that 28x 1 1/2 right out of your head and look for some 700c x 38 tires. They can be found at Canadian Tire for about $14 a piece. Too hard to find the original size ones. 

will try try the 700c 38 and get back to you...thanks

Hello. there was the following splints that are installed on a CCM for adult, : 28x 1 1/2 or 26x 1 3/8 or balloon tires 28 inches

With tire sizes Sheldon's site is the best reference, and he's correct in saying we should use the metric ISO sizes for clarity. (I help run a local community bike shop, and we get a lot of old bikes with "weird" tire sizes than need sorting out.)

So the CCM 28 x 1 1/2 (F13) is ISO 622, same as common 700C x 38. What is confusing is that this "28" is actually smaller than the 27" ISO 630 used on almost all old road bikes.

The British roadster 28 is ISO 635, the largest size (in diameter) made. The Brit. 26 x 1 3/8 won't fit either, being ISO 590.