Tyre Law
Tyre Law Tyres   must   have   a   minimum   depth   of   1.6mm   across   3/4   of   the   centre   tread. The   outside   edges   can   be left with no tread. A fine of up to £2500 and 3 points can be given for each illegal tyre. If   you   drive   with   damaged   or   worn   tyres   you   could   not   only   be   fined   and   in   breach   of   your   motor insurance policy, but you could also be endangering lives. General Requirements Every   tyre   fitted   to   a   motor   vehicle   or   trailer   must   be   fit   for   the   purpose   for   which   it   is   being   used   and   be   free from   any   defects   which   might   damage   the   road   or   endanger   any   person.   This   means   the   tyre:   must   be compatible   with   the   types   of   tyres   fitted   to   the   other   wheels   must   not   have   any   lump,   bulge   or   tear   caused   by separation or partial failure of the structure. It   must   not   have   a   cut   or   tear   in   excess   of   25mm   or   10%   of   the   sectional   width   of   the   tyre,   whichever   is   the greater, and which is deep enough to reach the ply or cord. It must not have any part of the ply or cord exposed. Note:   A   vehicle   is   liable   to   fail   an   MOT   test   if   a   tyre   has   any   of   the   above   faults   or   if   the   vehicle   has   tyres   of different nominal size or aspect ratio on the same axle. Duty to Maintain Each   tyre   must   be   correctly   inflated   to   the   vehicle   manufacturer's   and   the   tyre   manufacturer's   recommended pressure. ('Run-flat' tyres partially inflated or in flat condition are permitted in certain circumstances.) Tread   depth   must   not   fall   below   the   legal   minimum.   The   tread   is   that   part   of   the   tyre   in   contact   with   the   road   in normal conditions. The minimum depth of tread depends on the class of vehicle. Spare tyres There   is   no   legal   obligation   to   carry   a   spare   tyre   and   it   does   not   have   to   comply   with   the   legal   requirements while   it   is   stowed   away.   However,   when   fitted   to   the   vehicle   (for   example,   following   a   puncture)   it   must   then comply   with   the   law.   A   spare   tyre   is   not   a   testable   item   in   the   MOT   test,   though   the   examiner   may   draw   your attention to an unserviceable item as a matter of courtesy. Penalties Where   a   vehicle   fitted   with   an   illegal   or   defective   tyre   is   used   on   a   road,   a   police   officer   may   give   the   driver   a Fixed Penalty Notice or, in Scotland, a Conditional Offer Notice. A   police   officer   has   discretion   not   to   issue   a   fixed   penalty   but   to   report   the   case   for   prosecution.   In   law,   the driver and the owner (if different) are liable and one or both may be summonsed. The   maximum   fine   which   a   court   can   impose   for   using   a   vehicle   with   a   defective   tyre   is   £2500   and   three penalty   points   (£5000   in   the   case   of   a   goods   vehicle   or   a   vehicle   constructed   or   adapted   to   carry   more   than eight passengers). If   a   vehicle   is   fitted   with   more   than   one   defective   tyre,   you   can   be   summonsed   for   each   tyre   which   is   illegal. Disqualification is also possible in certain circumstances.
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