27.5 Tires vs. 26ers: How Much Larger in Diameter and What It Means for Bike Compatibility
27.5-inch tires have a rim diameter of 584mm, while 26-inch tires have a diameter of 559mm. The diameter difference is 25mm. This results in a height difference of 12.5mm. Bikes using 27.5 tires require an extra 12.5mm of fork clearance compared to those using 26-inch tires with identical specifications. Bikes designed for 26-inch tires may … Read more