# Often asked: How Do I Know What Size My Mountain Bike Tire Is?

## 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 size are my MTB tires?

Trail and all-mountain bikes will have tires in the 2.25″ to 2.4″ width range. Downhill bikes, which are meant to withstand the abuse of drops and rock gardens, are typically equipped with tires up to 2.5″ wide. Fat-tire bikes, which can be used for all-season trail riding, have tire widths of 3.7″ to 5″ or more.

## What does 27.5 inch bike mean?

27.5 mountain bikes, also called tweeners, are mountain bikes which use a large volume tire that is approximately 27.5 inches in diameter, 56 mm wide (ISO 56-584 / 27.5 x 2.25) on an ISO 584 mm 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.

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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.

## Does tire size matter on mountain bike?

Despite what you might have been telling yourself all of your life, size does matter – at least it does when it comes to mountain biking. The size of your wheel determines the level of rolling resistance you will get on the trails. Having a bigger wheel base allows you to overcome bigger obstacles.

## What MTB wheel size is best?

What wheel size is best for you?

• 26 inch wheels. These wheels being small generally offer the lightest option and greatest stiffness at a comparable price point across all the sizes available.
• 27.5 inch wheels (650b) The 650b is the half-way house between the 26 inch wheel and the 29er.
• 29 inch wheels (29er)

## Is 29-inch bike good for what height?

If you’re 5’6′ or taller, you should be able to find a 29er model to fit you. Riders more than 6′ tall can rejoice: You’ll definitely enjoy a more natural riding position with the size and frame geometry of a 29er.