Bicycle Wheel Standard Size. 27 5in wheels are the same diameter as 650b the smaller wheel size you ll sometimes find on gravel bikes in place of 700c wheels. 26 wheels iso 559 mm 26 wheels have a long history in the bike industry.
Standard road bicycle wheel size today is 622 mm and it usually takes tyres of 23 622 or wider 25 622. 27 5in wheels are the same diameter as 650b the smaller wheel size you ll sometimes find on gravel bikes in place of 700c wheels. So make sure you look at a tire size chart and try a full suspension mountain bike for size before buying.
Standard full size wheels.
23c 25c and 28c their width in mm. 29 the 29er another popular size for mountain bike wheels and tires. When it comes to choosing width there are two major factors at play. This wheel size is the largest available for conventional bicycles giving a racing bike more stability at high speeds.