Tires

Changing tyres on Giant Defy road bike

Changing tyres on Giant Defy road bike
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  • Horatio Craig
  1. Why do bike tires go flat when not in use?
  2. When should I replace my road bike tires?

Why do bike tires go flat when not in use?

All tires leak air. Rubber is composed of long elastic fibers, and there are gaps between the fibers where air escapes. That's why a rubber helium balloon will quickly lose its ability to float after a day or two while a mylar balloon will stay up for a week or more.

When should I replace my road bike tires?

Racing bicycle tires, which are designed for speed and high-performance, may need replacing after 1,000 miles, but tough bicycle touring tires can last as long as 4,000 miles. The most common sign that your bicycle tires should be replaced is a sudden streak of flat tires. Bicycle tires wear with age, too.

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