Overview
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Tyre buffing is a process of shaving a portion of tread off a tyre
in order to gain increased traction in dry tarmac conditions. This
works largely by removing tread 'blocks', which are the areas of
rubber between tread grooves. When the tyre heats up, these tread
blocks expand and the surface area of the tyre which contacts the
road decreases (and consequently traction also decreases). Tread
blocks also heat up faster and again reduce traction. This overall
process is referred to as 'tread flex'.
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Advantages of Buffing
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Tyre buffing minimises the problems associated with tread-flex by
shaving the tread of a tyre until tread-flex is no longer a concern.
The lower temperature which the tyre runs at decreases inflation
pressure build up, and the absence of tread flex reduces irregular
wear of the tyre shoulder.
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Disadvantages of Buffing
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The major disadvantage of tyre buffing is significantly reduced handling
capabilities in the wet. With no tread grooves, the risk of aquaplaning
is greatly enhanced. For optimal wet weather, new tyres with maximum
tread depth are recommended.
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