Wheel Size: 700c. Pressure: 7.50-8.50 bar (23mm); 6.50-8.50 bar (25mm) and 5.50-8.00 bar (28mm). Weight: 320g (23mm); 350g (25mm) and 420g (28mm). Whilst providing great grip, it is also long-lasting and highly durable – both characteristics of Continental tires, which are exclusively manufactured in the factory in Hefei (Asia).