# Question: What is the C in bike tires?

Contents

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 does 700x32c mean?

700 refers to the diameter of the wheel. Almost all road bikes have 700c wheels on them. 700x28c means a 700c tyre which is 28mm wide. 700x32c means a 700c tyre which is 32mm wide.

## What does the 700c in bike means?

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 does 38c on a bike tire mean?

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 does 700×20 25c mean?

700x25c is the dimensions of your bicycle tire, using the ‘French system’. … 700 is the nominal diameter of the bike tire, sized using millimeters. The next number, 25, is just the width of the tire (this is also measured using millimeters).

## What is a 700 C tire?

700c is the size of your bike tire, according to the ‘French system’. The “700” number is the stated diameter of the bicycle tire in millimeters. … C refers to the old French system which classified tire widths from “a” (the narrowest) to “d” (the widest). So, a “c” tire was almost as wide as these would get.

## What size bike tire is 700x32c?

At its most basic, a 700x32c tire is around 27 1/2 inches by 1 1/4 inches (or 1.26 inches).

## Is a 29er the same as a 700c?

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.

## Are 700c wheels the same as 26?

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.

## IS 700c 28 or 29?

The wheel sizes 28”, 700C and 29er or 29” all refer to the same rim size: ETRTO 622. The tyres can differ, but the 28”, 700C and 29er are all the exact same rim diameter.

THIS IS IMPORTANT:  Quick Answer: How do I know when I need new bike tires?

## What size wheel is 700c?

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 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.

## What does 700x35c mean?

So 700x35c means 700c diameter wheel with a 35mm wide tire. … “When the 29 inch MTB tire size was introduced a few years ago it had the same inner diameter of 622mm, known as 28” in Europe.

## What size tire is 700x25C?

Tire Size Chart

Tire Size Circumference in Meters Circumference in mm
700 x 20C 2.086 2086
700 x 23C 2.096 2096
700 x 25C 2.105 2105
700C Tubular 2.13 2130

## What size is 700C 25C?

A tire size you might see on a road bike:

700x25c indicates a tire with a 700mm outer diameter and a 25mm width.

## What is a 25C tire?

Road bicycle tyres generally come in three widths: 23c, 25c and 28c – this number refers to the width of the tyre at their widest point, in millimetres i.e. 23mm, 25mm and 28mm. … Whilst just a few years ago most professional cyclists were using 23mm, 25mm tyres are now the standard.