| Letter: A, B | |
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| Aquaplaning | Occurs when thickness of water film under tyre prevents direct contact between tyre and surface. No grip on surface. Car can no longer react to braking, turning, cornering or accelerating. Pirelli’s tread design minimizes risk of acquaplaning while clearing water between road and tread surface. |
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| Banbury | Large mixer processing raw materials with homogeneous mix of ingredients in the finished compound |
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| Bead | Area between cover and rim. Made of sturdy rubber aand steel cords. Guarantees strength. |
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| Belt | Under tread to stabilize carcass over footprint, even distribution of strenght and improves driving comfort and safety. |
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| Block | Single element of tread pattern. Shapes vary: square, lozenge, round, polygonal, etc. depending on tread design. |
