How Are 27.5 Inch Fat Bike Wheels Measured?
How Are 27.5 Inch Fat Bike Wheels Measured? A 650b wheel is one that’s about 27.5 inches in diameter, when measured from tyre edge to tyre edge. This compares to 26in for a standard mountain bike wheel and 29in for so-called ’29er’ wheels (700c road wheels are also 29in in diameter). How are fat tires