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:
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The crown and side wall are formed by the same ply structure.
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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.
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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
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RADIAL TYRE :
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The sidewall and tread areas function separately.
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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.
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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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