Serious question marks are being raised over the extent of some 'pre-NCT' tests and checks.
Motorists pay for such tests so their car will get through the NCT without fault or further expense.
However, high levels of failures with badly-worn tyres have prompted warnings that some outlets may not be checking all items on cars as thoroughly as they should be.
Tyres are the Number One reason for cars failing the NCT, according to official statistics from Applus, the company that oversees the National Car Test (NCT).
And Tom Dennigan of Continental Tyres (Ireland) told Independent Motors the figures are a concern.
"Firstly, they suggest that Irish motorists are simply not looking after their tyres.
"They are not checking them regularly and are not having them fixed or replaced when they need to be."
But he also raises questions about paid-for pre-NCT checks. "These statistics raise serious questions about the quality of tyre testing in so-called 'pre-NCT' checks." He asks: *Are these pre-checks focusing solely on the mechanical performance of the car and not paying enough attention to tyre condition? *Are those carrying out the checks properly qualified to do so on tyres? *Are pre-NCT checks focusing purely on mechanical aspects - to the exclusion of tyres?
He urged motorists to plan for a free tyre-check at any reputable tyre outlet as part of their pre-NCT preparation.
NCT test centre figures show tyre-related test failures fall into three main categories:
* Tread depth below the legal 1.6mm limit (in some cases this was recorded for all four tyres).
* Dangerous levels of damage such as cuts or bulges.
* Mis-matched tyres on the same axle. That would arise, for example, where tyres are not of the same size. Or they could have a summer and winter tyre on the same axle.
Most manufacturers and road safety bodies advise tyres should be replaced when they are six years old at the latest.
But that does not mean tyres of that vintage fail the NCT. Rather, the national testing body, can issue a 'pass advisory' note alerting the owner to the potential danger of their ageing tyres.
To reduce the likelihood of an accident and NCT failure, owners should:
* Regularly check their tyre pressures - at least once a month. This will also help a lot with fuel efficiency.
* Rotating tyres (front to rear) can extend their lifespan by up to 10,000km - front tyres can wear twice as fast.
* Regular wheel alignment will lengthen tyre life.
* Watch for tread depth. The legal limit is 1.6mm but most experts say it should be 3mm.
* The €1 tread check
The gold band on the front face of the €1 coin (beside the large No.1 and map of Europe) is 3mm wide. Insert the coin in the centre grooves of the tyre and you'll get a good idea of how much tread is left.
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