Road Bike Tire Sizes Chart

There are five tire diameter sizes that are in common use on modern standard adult bicycles.

Road bike tire sizes chart.

Used on mountain bikes these tires also go by the names. 26 1 3 8 1 1 2. When shopping for road tires you ll look for 700c x your preferred width 23mm being the slimmest option and going up to 36mm. 27 iso size 630 is an older size that was used for road bikes but since so many bikes were built with this size it is still readily available.

As long as your new tire s size matches one of these sets of numbers the new tire should fit your bike. Road tires generally come in the size 700c which roughly equals 700 millimeters. Some bikes especially triathlon bikes are available with wheel diameters of 650 or 650c. Iso etrto mm english size inch french size mm 35 584.

The letter at the end of a tire size is a throwback to an old french system when the letters a b and c designated different inner tire diameters it does not stand for cm. 27 5 650 6fattie or even just plus tires. 700x25c indicates a tire with a 700mm outer diameter and a 25mm width. When a road bike fits properly it s more efficient easier to handle and better at transferring your power to the road.

Choosing the correct frame size is a crucial component of getting the most out of your road bike. A standard road tire is 700c x 23mm indicating a tire diameter of approximately 700mm and a width of 23mm. So make sure you look at a tire size chart and try a full suspension mountain bike for size before buying. Some older road bikes still have the 27 inch size.

Because of the high pressure and desired low rolling resistance road tires come in narrow widths. Mountain bike size chart. Road bike tires generally come in three widths. 29 x 2 3 indicates a tire with a 29 outer diameter and a 2 3 width.

When it comes to choosing width there are two major factors at play. 12 1 2 x anything. For standard hardtails our mountain bike size chart should be a god send. If you re looking for some of the more obscure bicycle tire sizes here s a more comprehensive list of iso rim and tire sizes.

26 iso size 559 is the most commonly used size for modern mountain bikes and is also used by many hybrid bikes. 27 5 584 mm 650b tires. 23c 25c and 28c their width in mm. Size used on some high performance road and triathlon bikes especially those designed for smaller riders.

A tire size you might see on a road bike. A tire size you might see on a mountain bike.