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 Topic: Caravan Tyre Valve Safety Warning
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Message posted by Doo Heid23/10/2014 at 11:41am
Outfit: Location:
Joined: 22/10/2014
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Doo Heid
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I spent a couple of years working in a garage where we regularly replaced tyres and valves.
The fastest way to remove a valve is use the puller to yank it out, but sometimes knives are used to cut the base of the valve.
I noticed (and told the boss, who simply shrugged) that the knife was leaving small shards of metal on the inner rim of the wheel where the valve base sat.
The fact that rubber tyres have a use by date makes them deteriorate within 6 years to a cracked mess so you are forced to replace them is an excellent marketing idea, but also a damn splendid way of forcing people to do so.
A tyre gets all manner of ill use from bumping up kerbs, smacking pot holes and massive weight forced on it and it has to go round millions of times.
The valve, also rubber, manufactured in a similar fashion, also has a use by date and will crack due to it's age, but also from the fact it was pulled into place using a certain tool, will force it to stretch past it's daily use. If it is particularly hard to pull through, it will be stretched past it's designed fail stage and will therefore fail much earlier.
It is standard practice to replace them with any work done on a wheel involving removing the tyre. Your receipt should state Valve & balance as well as eco disposal of the old carcas or some such.
My humble advice if you do long haul towing?
Buy metal screw in valves and make sure they are lightly lubricated on servicing.
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Message posted by Kenny210504/4/2015 at 12:00pm
Outfit: Sterling eccles amethyst Range rover Location: Somerset
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Kenny2105
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Sorry just reading this thread, I have seen some errors, I own a tyre company, 1st point Valve (rubber) should be replaced on every tyre change , demount or at any time the tyres is removed from the rim, In the last 5 years or so RCA's have been removed from the tyre during in construction and replaced with Natural based oils (Essential Oils.)this makes the tyre age faster, under trading law, no Tyre is sold over 5 years old, all tyres carry a date code (DOT) located on the outwall on one wall only could be on inside or outside, in a embossed oval 4 number are inside eg: 2394, 1st two number are the week in the year and last two are the year, Metal valves/TPMS valve (tyre pressure monitoring valves) the valve cores in these valve are zinc not brass, if the valve core looks brass (gold) its wrong and needs to be removed asap as brass reacts with the aluminium valve stem and will cause premature failure of the valve. Hope this helps
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