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Basics on tyres

David Bird

on 12 September 2012

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Transcript of Tyres

Tread wear indicator Tread depth gauge Construction
types ID Tyre Markings Legal requirements & the law Directional tyres Tread Patterns Asymmetric tread Symmetrical Tyres Current tread depth legislation requires that car tyres must have a minimum of 1.6mm of tread in a continuous band throughout the central ¾ (or 75%) of the tread width and over the whole circumference of the tyre as the image below shows. Check the side wall of all tyres for any damage, splits, lumps or bulges. Any splits longer than 25mm or showing the cords. Check that each tyre is of the correct size and pressure for the vehicle Up to £2500 per Tyre and up to 3 points per Tyre Radial Cross pLy Bias-Belted C
R The same size & type on the same axle Tyre Types How can we check tyres? How can we maintain the Tyres? Tyres must be disposed of by a specialist Keep the tyres correctly inflated Always check when the tyres are cold Schrader Valve Pressure We measure pressure in either ? Bar or Psi 1 bar = 14.50326 psi Compressed Air can be very dangerous If it enters you bloodstream YOU WILL DIE!!! Never place the gauge onto you skin!!!!!! Under-inflation Incorrect Alignment Incorrect Alignment Over inflation Wear Indicator Tread Wear - What can it tell us? We can visually check them We can also hear (Aural) leaks Equipment
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