Because of the high pressure and desired low rolling resistance road tires come in narrow widths.
Road bicycle tire sizes.
Conversion tables for common bicycle tire sizes.
Smaller tire sizes like the 25c is unforgiving on bad roads.
Size used on some high performance road and triathlon bikes especially those.
Touring bikes come in many shapes and sizes depending on the intended usage from light and fast tourers based loosely on regular road bikes to round the world heavy duty models.
Common road bike widths in millimeters come in sizes ranging from 18 to 23 with a typical road bike tire at 700 x 23.
It s a holdover from an old french system that designated tire sizes using the letters a b and c.
As the width increases the tire will have more contact surface with the road making it more stable and comfortable.
Sometimes these letters seem to come in tire sizes.
A 32c is a good.
Note that the c does not stand for centimeters.
The second smaller number is the tire s width.
Remember the bigger the wheel the smoother the ride.
Road tire sizes 700c.
You see 650b that is same of today s 27 5 inch mountain bike tire and 650c that is little smaller inner diameter instead of the 560b tire and easily got into a few road bikes.
A standard road tire is 700c x 23mm indicating a tire diameter of approximately 700mm and a width of 23mm.
The 700c is an ideal wheel size as it is the standard wheel size for most road bikes.
26in 650b and 29in explained.
A bike with an 18 frame is your sweet spot.
When shopping for road tires you ll look for 700c x your preferred width 23mm being the slimmest option and going up to 36mm.
Typical road bike tire.
23c 25c and 28c their width in mm.
As the only contact point between you and the road your tyres are one of the most important components on your bicycle.
But you also need to consider other factors such as tire sizes.
As the width decreases there is less rolling resistance or friction and therefore is faster.
700 x 32c indicates a tire that has an outer diameter of 700mm and a width of 32mm.
Some older road bikes still have the 27 inch size.
For example a common mountain bike tire size is 29 x 2 25 meaning that the outer diameter of the tire is 29 inches and the width of the tire is 2 25 inches.
Tyre size typically varies from 25mm to 42mm and some heavier duty touring bikes use 26 inch mountain bike wheels with even bigger volume tyres.
Nowadays bike tires are typically marked according to iso standard a system originally developed by etrto european tire and rim technical organization but older english and french tire size dimensions are still used as well use the data from the following tables to determine interchangeability and convert between iso etrto english.
Especially any 700 tire nowadays is similar to the size of old 700c tire.
