Mountain Bike Dimensions Explained

For the most part bike frame size is the only thing that changes when you go between sizes things like wheel size suspension and relative geometry number remain the same.

Mountain bike dimensions explained.

When looking at mountain bike sizes you will first be presented with the frame sizes. These sizes can be thought of as a sort of shorthand for decimal sizes each with a corresponding iso measurement. 700x25c indicates a tire with a 700mm outer diameter and a 25mm width. Mountain bike tire size and width.

A tire size you might see on a mountain bike. Mtb sizes are measured in inches or as s m. The frame size is so important that bikes are labeled just by this size. As the name suggests actual seat angle refers to the lay back of the seat post but on modern suspension bikes this is complicated by the seat tube starting forward of the.

Mountain bike sizing guide. Most mountain bike manufacturers use classic small medium large sizing. First consider what kind of bike you want sizing varies greatly between road and mountain bikes as well as between men s and women s models and even between. Mtb s are engineered for off road riding.

Consider the bike type. 29 x 2 3 indicates a tire with a 29 outer diameter and a 2 3 width. Trail and all mountain bikes will have tires in the 2 25 to 2 4 width range. Sizes written as decimals such as 2 75 are different than sizes expressed as fractions such as 2 3 4.

Since getting hooked on mountain bikes aged thirteen riding a tiny 24seven crosser he s raced downhill enduro and cross country. This is the angle of the seat tube relative to the ground. Read the size carefully. A cross country bike will have tires in the 1 9 to 2 25 width range.

How mountain bikes are sized. What mountain bike frame size should i ride. A tire size you might see on a road bike. A hybrid of road and mountain tires cyclocross tires are labeled as 700c and have widths indicated in millimeters like road bikes yet are knobbie like mountain bike tires.

A third type of tire size might appear on either a mountain or a road tire. The sizes you commonly see for mountain bike wheels like 26in 27 5in and 29in all refer to the outside diameter of the wheel with the tire fully inflated. Mountain bike geometry explained in 9 numbers. Seb s been riding and racing mountain bikes for half his life.

Frame size is based on the frame s seat tube. Traditionally they come with a 26 wheel but more recently we ve seen the launch of 29 and 27 5 650b wheeled bikes. How are mountain bikes sized.