# How To Read Bike Tire Size?

The first number is the diameter of your wheel. 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.

## How do I know my bike tire size?

Check your tire’s sidewall —the numbers there indicate your tire size (roughly its outer diameter and its width, but not always in that order). Typical road bike tire: 700 x 32c indicates a tire that has an outer diameter of 700mm and a width of 32mm.

## What do the numbers on a bike TYRE mean?

The three-digit number after the dash is the more important. This is the bead diameter at which the tyre fits onto the rim. Check the bead diameter of the tyres on your bike. Although, the initial two-digit number is the tyre section and roughly indicates the tyre width.

## What does 700x28c mean?

700x28c simply means the size of your bicycle tire, according to what’s known as the ‘French system’. “700” is the overall diameter of the bike tire, measured in millimeters. The “c” is part of the old French system that classified widths of tires from “a” (being the narrowest) to “d” (which was the widest).

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## What means 700x23c?

700x23c simply means the dimensions of your bike tire, under what’s known as the ‘French system’. The first number, 700, refers to the nominal diameter of the bike tire and is measured using millimeters. The second number, 23, is actually the width of the bike tire, again it’s measured in millimeters.

## IS 700c same as 28?

28”/700C/29er 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. 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 622 the same as 700c?

The standard modern road bike wheel has an ISO diameter of 622 mm and is referred to as 700c (makes sense, right? /s). While the diameter for both 29″ and 700c wheels is the same at 622mm, rims made for mountain bikes are generally wider to accommodate wider tires.

## 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 a 28c bike tire?

Choosing your road tyre width 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.

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## How wide is 28c tire?

A ISO tire size of 28-622 is how we would refer to a 700 x 28C tire has a tire width of 28 mm and a rim diameter of 622 mm.

## What size tire is 700x38c?

Here’s the quick answer: In basic terms, a 700x38c tire is approximately 27 1/2 inches by 1 1/2 inches (or 1.50 inches).

## What is a 622 bike tire?

International Organization for Standardization The ISO number for a 700c tire is 622. Each ISO number corresponds to a more general number (like 700c or 26″) that is used to indicate the tire’s size on the packaging, etc.

## What does 622 mean on bike tires?

The 622 is what’s called a “bead seat diameter,” which means it’s the diameter where the bead of the tire–basically the edge of the sidewall–meets and is held into the rim (an internal measurement of sorts).

## Can I fit 700×25 Tyres on a 700×23 wheel?

Both sizes will work on the same rims. There is a definite trend in the last year or two to put slightly wider tires on road bikes.