• May 21, 2022

What Does 700x38c Mean On A Bike Tire?

What does 700x38c mean on a bike tire? 700x38c is the size of your bicycle tire. 700 is the nominal diameter of the tire in millimeters. 38 is the width of the tire (as seen if you were looking at your bike from the front/back). C refers to the old French system of classifying wheels according to their Bead Seat Diameter.

What size is a 700 x 38C bike tire?

Table of bicycle tires sizes

ETRTO English Size FRENCH SIZE
38-622 28 x 1-5/8 x 1½ 700 x 38C
37-622 28 x 1-5/8 x 1-3/8 700 x 35C
32-622 28 x 1-5/8 x 1-1/4 700 x 32C 700C Course
28-622 28 x 1-5/8 x 1-1/8 700 x 28C 700C

What does C mean in bike TYRE size?

E.g., 700x25c. The letter “C” in a tire's parameters refers to an archaic French standard for bike tire sizing which relied on letters ranging from “A” to “D” to indicate a tire's width and subsequently the circumference of the corresponding rim.

What size is a 700 c bike?

700C is used to refer to any tire, rim, or wheel with a 622mm BSD, but it could be on a skinny-tired road bike where the wheel has an actual diameter of only 660mm (which is actually a little LESS than 26 inches!), or a mountain bike with a wheel diameter of over 29 inches.

What inner tube do I need for 700x38c?

The simple answer is: 700x38c converts to around 27.5” x 1.5”. The even simpler answer is to stick with the 700x38c sizing and buy a tube that's labeled with that size.


Related faq for What Does 700x38c Mean On A Bike Tire?


How wide is a 38c TYRE?

“The 38c (40mm) width is by far the most popular now, but things keep getting wider,” said Nathan Forbes, Schwalbe brand manager.


Are 700c and 28 the same?

28”/700C/29er

The tyres can differ, but the 28”, 700C and 29er are all the exact same rim diameter. The 700 markings will be followed by the width in mm, and the 28 or 29 markings will be followed by the width in inches.


IS 700c the same as 700?

It doesn't mean anything, really. It's a historical relic. At one point in time, "700c" was a standard tire/rim size, where "c" indicated the bead seat diameter and "700" was the diameter, in millimeters, when the tire was installed and inflated.


Are 26 inch wheels the same as 700c?

What Is The Difference Between a 26 Inch and a 700c Wheel? This brings us around back to the same answer; they are the same diameter, but a 26-inch tire will fit onto a 700c rim but not the other way around because of the difference in rim thickness.


Are 700c tires the same as 29?

29" (ISO size 622) is actually the same rim diameter as 700C, although most 29" tires will not fit 700C road rims because they're too wide. 700C (ISO size 622) is the most commonly used size for modern road bikes.


What size tire is 700?

700c. A standard road tire is 700c x 23mm, indicating a tire diameter of approximately 700mm and a width of 23mm.


Will a 29 inch tube fit a 700c?

So a 29 inch MTB tube will have the same diameter as a 700c road wheel, while a 27.5 inch tube will be the same diameter as a 650b road wheel. You can also get 26 inch MTB tubes.


What does 700c 30c mean?

In short - the 700x25C is a French nomenclature for tire size meaning tire diameter of 700mm and tire width 25mm and C is the width of the rim (A is very narrow, D is wide). Thus the number between "x" and "C" is the tire width in mm. For more information you can read a section on tire sizing on Sheldon Brown page.


Can I put narrower tires on my bike?

Yes, you can put narrower tires on a mountain bike, but there is a minimum size for your rim. With so many different tires sizes from which to choose, you may want to go for narrow or wide ones depending on the purpose for which you need a bike.


Are all 700c wheels the same width?

On a '700c' wheel, you can have a range of different widths. 23mm wide tires have been the standard for most road cycling over the past couple decades. You might see a 700x20c, or a 700x25c. On a cyclocross bike or 29-inch mountain bike, you could see tires as wide as 700x35c or 700x58c.


Which is bigger 700c or 29er?

29″ (ISO size 622) is actually the same rim diameter as 700C, although most 29″ tires will not fit 700C road rims because they're too wide. 29″ tires are popular with mountain bikers; search for 29″ MTB.


WHAT IS 700c wheel size in inches?

All road and cyclocross bikes are built with 700c wheels, which are 29 inches. However, 700c wheels are designed to accommodate a thinner tire. Many come in widths ranging from 18 to 23 millimeters, with touring tires ranging from 25 to 28 millimeters.


What's a 650B wheel?

A 650b wheel is one that's about 27.5 inches in diameter, when measured from tyre edge to tyre edge. This compares to 26in for a standard mountain bike wheel and 29in for so-called '29er' wheels (700c road wheels are also 29in in diameter).


Can you convert 650B to 700C?

However; as with mountain biking, we are seeing some 650B wheels and tires being used now. In a traditional 650B conversion, where the 650B tires are swapped into a 700C road bike, most authorities agree that a fat, 42mm-47mm 650B tire will approximate a 700 X 28-30mm wheel and tire's diameter.


Can you put 700C wheels on a 650B bike?

Fortunately, on frames designed for it, riders can easily swap between 650b and 700c wheels as riding goals and conditions change.


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