275/65R18 Tire vs 700x25c Bike Tire: Size & Dimensions

The 275/65R18 Tire and 700x25c Bike Tire are most easily told apart by their overall size. On height, the 275/65R18 Tire measures 815.0 mm against the 700x25c Bike Tire's 670.0 mm — about 145.0 mm more. On width, the 275/65R18 Tire measures 815.0 mm against the 700x25c Bike Tire's 670.0 mm — about 145.0 mm more. On thickness, the 275/65R18 Tire measures 275.0 mm against the 700x25c Bike Tire's 25.0 mm — about 250.0 mm more.

The 275/65R18 Tire is the heavier of the two at 23.00 kg, compared with 300 g for the 700x25c Bike Tire. That is a 22.70 kg difference (7,567%). The weight gap is modest and rarely the headline difference between them.