# FAQ: What Is The Bike Tube Size In Inches Of A Bicycle Tire 700x38c?

## What does 700x38c mean?

700x38c is the size of your bicycle tire. 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. Read on for my recommended 700x38c tire and tube for your bike.

## How many inches is 700 C?

700C = 622 millimeters = 24.5 in.

## How wide is a 38c tire?

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

## How do I know what size inner tube to buy?

The best way to check what size inner tube you need is to look on the sidewall of your tyre. Tyre manufacturers print the size on the sidewalls, so look out for numbers such as ‘700x23c’ for a road bike, or ’26×1. 75′ which is for mountain bikes.

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## What does the C mean in bike tire size?

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 are bike tire sizes?

Sizes such as 26, 24, 20, 27.5, 29 and 700c are common tire diameters. The second number (after the X) is the width of your tire. The range for widths is usually between 1 and 3 inches. For example, a 26 x 1.75 size means the tire diameter is 26 inches and the tire width is 1.75 inches.

## Is the inner tube the same size as the TYRE?

The size is almost always written somewhere on the sidewall of the tyre. Inner tubes typically state a wheel diameter and width range for which they will work, e.g. 26 x 1.95-2.125″, indicating that the tube is intended to fit a 26 inch tyre with a width of between 1.95 inches and 2.125 inches.

## Is 29 the same as 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. 700C (ISO size 622) is the most commonly used size for modern road bikes.

## Is 28 inch the same as 700c?

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. This is the most common wheel size, so look out for familiar markings (such as 28×1.

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## Is 26 inch the same as 700c?

A 26 inch, or a 650c wheel is about 1 inch smaller (about 2 inches smaller with road slicks) in diameter than a 700c. Some people think that because 700c wheels are the ‘standard’ for road bikes, they must be better.

## What size is a 700 TYRE?

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.

## Is 27.5 the same as 700C?

Just as a 700C wheel is the same diameter as a 29” (29er) wheel, 650B shares the exact same rim diameter as 27.5”. 27.5”/650B rims have a bead seat diameter of 584mm, and 29”/700C rims have a bead seat diameter of 622mm.

## What is the standard road bike tire size?

Road bike tires: Most road bikes have a 700mm outer diameter, with widths starting at 23mm. Most road tire widths are less than 30mm, but you can also find tires as wide as 45mm on bikes intended for gravel roads.

## Is 32 mm enough for gravel?

Your tyre width again comes down to your route and what kind of terrain you’ll be riding. If the majority of the ride is on the tarmac with a few gravel sectors, aim for something between 28-32mm. Anything that is majority gravel, 36mm and up will be the ticket.