Road Bike Tire Size Differences

Not surprisingly gravel bikes and road bikes have vastly different tire sizes that each require different tire pressures.

Road bike tire size differences. You can mount a tire up to 55mm onto a gravel bike. This system states the 622mm inner tire diameter rather than the 700mm outer tire diameter because a key concern is ensuring that wheel size outer diameter and inner tire diameter align with one. Road bike tires offer a bit less variety when it comes to size compared to mtb tires. Select up to 3 road bike tires.

The forks and frames of gravel bikes have a huge clearance in comparison to road bikes. The standard tire diameter is 700c while 650b tires can be seen as well usually to provide a smaller stand over clearance for riders. 25 622 is the international standardization organization iso way of identifying the 700x25c tire in the example above. Side by side tire comparison.

Read the size carefully sizes written as decimals such as 2 75 are different than sizes expressed as fractions such as 2 3 4. All size measurements are taken at an air pressure of 100 psi 6 9 bars on a 17 8 mm inner width rim. It was mentioned earlier that the frame design for a gravel bike allows for larger tires. Rolling resistance test results.

Obviously the tires that came with my bike aren t ideal for road conditions and i was wondering what type and size of tire i would need as sizing is a little bit confusing. 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. I currently have front tyre schwalbe smart sam active 57 621 and rear tyre schwalbe smart sam active 57 622 on rims cube ex23 36h disc tubeless ready.

A road bike is designed to have the least rolling resistance possible which usually means running a 23mm or 25mm slick tire with between 90 to 100 psi.