Continental Tour 28 (700c) 32-47 mm (622-635), Dunlop 40 mm Inner Tube

Continental Tour 28 is a classic inner tube for 28-inch and 700c wheels with slightly wider tires. It fits 700c tires from 32 to 47 mm and is a reliable choice for touring, commuting, and everyday cycling when you want a standard butyl tube with good puncture protection.

This version has a 40 mm Dunlop valve, also known as a Woods valve. Dunlop valves are primarily found on city, trekking, and older European bicycles and use a larger valve hole than Presta valves. Therefore, check which valve type your rim is designed for before ordering.

For standard 700c wheels, the tube’s ETRTO range is 32-622 to 47-622. Continental also specifies compatibility with 42-635. Check the ETRTO marking on the sidewall of your tire if you are unsure—both the tire width and rim diameter must match the tube’s specified dimensions.

Continental Tour 28 combines low weight with good puncture protection, and every tube undergoes quality control before leaving the factory.

Quick Specs

• Product type: Bicycle tube / inner tube
• Material: Butyl
• 700c size: 32-622 to 47-622
• Additional compatibility: 42-635
• Fits tire widths on 622 mm rims: 32–47 mm
• Wheel standard: 700c / 28" (622 mm) and 42-635
• Valve type: Dunlop / Woods valve
• Valve length: 40 mm
• Does not fit: Rims with valve holes sized only for Presta valves