Bicycle Wheel Sizes for Adult Bikes
There are a couple of wheel/tires sizes that are standard on American Bicycles. Bicycle tire sizes are normally measured on the outside of the tire and this is called the nominal tire size. For example a 26 x 2.0 tire will fit on a 26 x 1.75 or 26 x 1.5 wheel. The approximate outside diameter with the tire installed is 26 inches.
What is the difference between 26 x1.75 and 26 x 1 3/4?
The 1 3/4 size is actually a different bead size so the tires will not interchange. The 26 x1 3/4 is an old Schwinn size that has not been made since the 60′s but the tires are still available to fit these rims.
Is 27″ the same as 700c?
No the 27 x 1 1/4 tire will not fit a 700c rim. The bead of the tire is about 1/2″ too big. Tubes will normally work on either 700c or 27″ tires just fine.
Is 29″ the same as 700c?
Yes, the bead size of a 29″ mountain bike wheel is the same size as the bead size of a 700c rim. Normally the mountain rims are a little bit wider to allow the 29″ tire to fit a little better.
Old 3 speed bicycle sizes
The old 26 x 1 3/8 tire size is not the same as the 26 x 1.75 or the 26 x 1 3/4. There is also another 26 x 1 3/8 tire size that was made by Schwinn until the late 70s that was called 26 x 1 3/8 or 26 x 1 1/4. The bead of this rim is just large enough that it seems you will be able to get the regular 26 x 1 3/8 tire on. You will ruin the tire if you do get it on and it is nearly impossible to get back off.
Rick Kern Bicycle Hangar Missoula, Mt
September 22nd, 2009 at 4:10 pm
Will a 29er wheel fit on a 26er?
May 3rd, 2010 at 3:32 pm
No, 29ers are specifically built to fit the larger wheels. Not only are the wheels too large to fit in the frame and fork, but the geometry of a 29er is completely different than that of a 26er. In the early days of 29ers (around 2000-2003) some people played with the idea of buying a 29er fork and front wheel and putting it on an existing 26 inch wheeled bicycle. I have never ridden such a machine but I think you would be better off purchasing a bicycle that has been built around one wheel size or the other.
May 26th, 2010 at 6:07 am
can a 700c exterior tire fit to a 27X11/4 rim
May 26th, 2010 at 6:14 am
you said that ” 27×1 1/4 tire will not fit a 700c rim” what about vise versa ” can a 700c tire fit a 27 x 1 1/4 rim?
May 26th, 2010 at 10:37 am
No the wire bead in the tire will not fit on a different sized rim. The 700c will only fit on 700c and 29er rims which are the same size. And 27″ tires will only fit 27″ rims.
May 26th, 2010 at 10:37 am
No the tubes are interchangeable but the tires are not.
May 26th, 2010 at 5:43 pm
thanks for the tips…. more power…..
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May 30th, 2010 at 11:36 am
It’s strange just how many different sites the internet has on this topic. I don’t know if I’ll ever need to come back, but it’s nice to know I stumbled upon the one that has a lot of helpful info if this comes up for me again
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