Road Bike Wheel Size Width

Our road bike size chart will work like a very simple road bike size calculator.

Road bike wheel size width. The size of a bicycle wheel is usually measured using the tire size which comes in several stock sizes that are universal across the world. Wider internal widths limit the smallest tire size you can use. Whereas 17c stock wheel rims typically have an outside width of 21 23mm wide across their brake tracks 19c stock wheel rims typically run 25 27mm outside widths. 700x25c indicates a tire with a 700mm outer diameter and a 25mm width.

Bike frames are measured from the middle of their bottom bracket to the end of their seat tube. The spacing of a hub is measured from the outside faces of the cone locknuts where they come into contact with the frame s forkends most cartridge bearing type hubs don t have locknuts so the spacing is measured from the equivalent shoulder surface of the axle ends the spacing dimension is commonly referred to as the o l d over lock nut distance. If your road bike was built in the last 20 years and has rim brakes it most likely has a 130mm width quick release rear axle written as 130mm qr or 130 9mm and a 100mm 100 qr or 100. Ideally for a 40mm tire intended for gravel roads select a 21 24mm internal rim width.

Place your feet shoulder width apart. This wheel size is the largest available for conventional bicycles giving a racing bike more stability at high speeds. Gravel road if your wheel set is going to be used for both road and gravel select a road rim and tire sizes 25mm 50mm. If all three have a 15 frame there will be a height difference between them due to their wheel size.

The venerable sheldon brown has a gear calculator that uses a different method to determine wheel size. In some site it suggested frame size of 18 5 47 cm size. A third type of tire size might appear on either a mountain or a road tire. Sometimes very small adult road bike frames will use a smaller wheel size like 650b but it s more common even for small frames to use 700c wheels.

Racing bikes use the 700c size which has a tire bead set diameter of 622 millimeters. A tire size you might see on a mountain bike. His calculator uses an pre defined diameter for every rim tire combination and his diameters are almost always different than what the math would predict. Most adult road bikes use 700c wheels whereas 26 is typically a mountain bike wheel size although in recent years mountain bikes are using larger wheels as well.

As this road disc bike category is only a few years old bike companies have made their frames wide enough to fit and deliver the benefits of these and even wider wheels and tires. This means an internal rim width of at least 20mm.