Road Bike Sizing Top Tube
Many road tyres are now 25mm and cyclocross touring and hybrid bike wheels may have tyres fitted that are up to 36mm so make sure you carry the appropriate width tube.
Road bike sizing top tube. In this choosing the correct size road bike. The only reason the top tube measurement was ever remotely relevant was due to the squareness of steel and then aluminum road frames. 700c wheel size 29 27 5 650b inch wheel sizes. While you can find a variety of bikes with wheel sizes ranging from 16 to 27 5 inches the most common sizes include 26 inches 27 5 inches 29 inches and 700c.
Most road bikes come in two styles racing road bikes long in the top tube and low at the front for faster riding and sportive road bikes which tend to have shorter top tubes and higher front ends for extra comfort. When it comes to the top tube the angle of the head tube and seat tube will have an impact if a bike has a 55cm top tube and a 70º angle and another has a 73 5º angle effectively the. Road bike sizing guide. The 53cm sized frame s top tube is 558mm matches more closely my current 56cm sized frame with a 560mm top tube.
It is important to note that different kinds of bikes also have different sizing a mountain bike won t fit the same size as a road bike and a bmx won t fit the same size as a mountain bike. Conventional road bikes have seat tube angles within a relatively small range 72 5 74 so if only considering this type of bike you could argue that there only two key dimensions hence some manufacturers have started to use stack and reach to define the relative position of crank and top of head tube. It is therefore essential to do your research and look up the specific sizing of the bike you are after read reviews use size charts and ask questions on online forums live chats if possible. Finding the right inner tube depends on the size of the tires on your bike.
The most important consideration to make as you decide which frame to go for is the effective top tube length. The crucial element to obtaining the right fit is to ensure that the sizing of key components such as the handlebars.