"GbH" <
[email protected]> wrote in message
news:
[email protected]...
> In news:[email protected],
> Huw <hedydd[nospam]@tiscali.co.uk> blithered:
>> "GbH" <[email protected]> wrote in message
>> news:[email protected]...
>>> In news:[email protected],
>>> Paul <[email protected]> blithered:
>>>> had a flat on the disco today, took it to get repaired and they
>>>> could not because the puncture was on the edge of the tyre wall.
<snip>
>>>
>>> Could you not get it tubed?
>>>
>>
>> Not legal. Or at least, tyre fitters will not do it for legal and
>> insurance reasons.
>>
>
> So its not legal to have a tyre fitted with an innertube?
>
Perhaps "not legal" was pushing it a bit too far, but Huw makes a valid
point. There are two principal reasons for not putting tubes in
punctured tyres marked as "tubeless": since the puncture hole isn't
sealed, water can get in and damage the tyre reinforcement; and the
inside of the tyre may have ribs or other unevenness that may quite
rapidly fret through an inner tube. There's far more deformation of
tyre sidewalls with modern radials than there used to be with
crossplies. It's a brave, foolish, or ignorant tyre fitter that will go
against the relevant BS code of practice and the tyre maker's advice.
And you can get a new tyre for less than the cost of 3/4 of a tank of
derv.
AIUI, the reason for not mixing new and old tyres on the same axle is
because the diff is then working all the time, but I find it difficult
to believe that 2 or 3 % difference in wheel speed matters a jot, or
we'd never dare drive round roundabouts. I suppose there may be subtle
effects of the different slip characteristics of different makes or ages
of tyres, but since, even on the road, one wheel may well be on very
different tarmac to the other, I can't get too excited.
--
Kevin Poole
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Car Transport by Tiltbed Trailer - based near Derby
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