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Butyl Tube

Bias and Radial Tyres and Tubes

Tube for Radial Application is being made with different profile and compound to absorb more flexing in side-wall area and more splice integrity for riding comfort and longer life. Let-us Understand difference in Construction and Application of “Bias” and “Radial” Tyres:

Bias or Cross-Ply Tyre:

The crown and side wall are formed by the same ply structure.

The tread is subjected to any flexing which occurs and this causes :
  • Deformation of the tyre contact area on the ground.
  • Friction with the ground.
The casing plies tend to "scissor" in relation to each other. As a result, there is :
  • Accelerated wear
  • Poor grip
  • High fuel consumption
  • Fair road holding
  • High heat built up
  • Prone to crown punctures


The sidewall and tread areas function separately.

The tread is unaffected by the flexing of the sidewalls, so there is :
  • Less deformation of the tyre contact area on the ground.
  • Less friction with the ground. There is no movement between casing plies.
Advantages :
  • Longer tyre life
  • Excellent grip
  • Reduced braking distances
  • Even ground pressure over the whole contact area. This provides excellent floatation.
  • Lower fuel consumption
  • Smoother and better road holding
  • Cool running : giving added safety
  • Excellent protection against punctures

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