Up To Date 32+ 26In Bike Tires. A wide variety of 26 in bike tire options are available to you, such as use, is_customized, and width. But in terms of 27.5 x 3.8″ and the larger 26″ fat bike tires, they are pretty close in diameter. Quality service and professional assistance is provided when you shop with aliexpress, so don't wait to take advantage of our prices on these and other items!