27.5" (650B) Bike Tire vs 275/55R20 Tire: Size & Dimensions

The 27.5" (650B) Bike Tire and 275/55R20 Tire are most easily told apart by their overall size. On height, the 275/55R20 Tire measures 811.0 mm against the 27.5" (650B) Bike Tire's 700.0 mm — about 111.0 mm more. On width, the 275/55R20 Tire measures 811.0 mm against the 27.5" (650B) Bike Tire's 700.0 mm — about 111.0 mm more. On thickness, the 275/55R20 Tire measures 275.0 mm against the 27.5" (650B) Bike Tire's 55.0 mm — about 220.0 mm more.

The 275/55R20 Tire is the heavier of the two at 22.00 kg, compared with 800 g for the 27.5" (650B) Bike Tire. That is a 21.20 kg difference (2,650%). The weight gap is modest and rarely the headline difference between them.