How do you prevent tire tube from sliding on bicycle?

To prevent a tire tube from slipping or sliding around on a bicycle rim, you can use the following methods:

1. Use Schrader Valves: Schrader valves have a wider base and are used on most mountain bike and hybrid tires, making them less prone to slipping.

2. Tire Levers: Before installing the tire, use tire levers to ensure that the tire is seated correctly and evenly on the rim. This will help prevent slipping during inflation and riding.

3. Inflation Control: Properly inflate the tire according to the recommended tire pressure. Under-inflated tires can cause the tube to move or slip. Ensure the tire is inflated to a firm but not over-inflated state.

4. Tire Size: Use a tire that fits snugly on the rim. Wider rim with matching wider tires will offer a more secure fit.

5. Talcum Powder: Lightly dust the inside of the tire and the tube with baby powder or talcum powder before assembly. This can reduce friction between the tube and tire, preventing movement.

6. Double-sided rim tape: Installing rim tape specially double sided can create an additional barrier between the tire and rim surface.

7. Rim Compatibility: Ensure that the rim shape is compatible with the tire's bead design. some tires are tubeless ready by design, whereas some are clincher tires.

8. Tire Pressure Differential: For tubeless tires, set slightly lower tire pressure for rear tire compared to front tire. the differential help prevent the rear tube from slipping under acceleration.

9. Proper Seating: During installation, ensure that the tire is properly seated on the bead hooks of the rim.

Remember that the methods can vary based on the bike type and tire setup, so if the issue persists, it's best to consult a professional bicycle mechanic for further diagnosis and proper solutions.