275/65R18 Tire vs 29" (29er) Bike Tire: Size & Dimensions

The 275/65R18 Tire and 29" (29er) Bike Tire are most easily told apart by their overall size. On height, the 275/65R18 Tire measures 815.0 mm against the 29" (29er) Bike Tire's 740.0 mm — about 75.0 mm more. On width, the 275/65R18 Tire measures 815.0 mm against the 29" (29er) Bike Tire's 740.0 mm — about 75.0 mm more. On thickness, the 275/65R18 Tire measures 275.0 mm against the 29" (29er) Bike Tire's 55.0 mm — about 220.0 mm more.

The 275/65R18 Tire is the heavier of the two at 23.00 kg, compared with 900 g for the 29" (29er) Bike Tire. That is a 22.10 kg difference (2,456%). The weight gap is modest and rarely the headline difference between them.