An air pressure equipment and a vulcaniser at work | credits: John Ameh |
Experts say that a car with a healthy engine is worthless if it lacks good tyres.
Tyres glide on the surface of roads and
their condition can either cause accidents or prevent them. This
underscores the importance of tyres as sensitive parts of a vehicle.
Apart from being exposed to wear and tear, the pressure of the tyre is a major issue in road safety.
According to a report posted on tyresafe.org, a correct tyre pressure is vital to the safety of human lives on the road.
Most vehicles come with recommended tyre
pressures, depending on the type of vehicle; its load-carrying
capacity, speed, and other factors.
Manufacturers insist that motorists must comply with the recommended tyre pressure at all times.
Tyre manufacturers, including
Bridgestone, warn that under-inflation or over-inflation of tyres can
expose a vehicle and its passengers to danger, including fatal
accidents.
The report says, “For most passenger cars, minivans and mini-pickups, the recommendations range from 27 to 32 psi.
“The recommended inflation pressures for
full-size pickup trucks and sport utility vehicles, tend to be about
five to eight psi higher and intended to reflect the sizes and of these
vehicles.
“It is important to note that the recommended inflation pressures may differ for the front and rear tyres.”
In Abuja, many artisans who engage in the repair of tyres, popularly known as vulcanisers,
do not care about these safety measures. Indeed, the typical vulcaniser
is concerned with his survival, not the safety of the vehicle owner.
It seems that the unwritten rule among vulcanisers
is that any car driven into their workshop or makeshift tent must have
its tyres inflated, no matter the level of pressure in the tyres! In
this way, the owner of the vehicle is made to cough out some money.
The experiences of many motorists in Abuja show that most vulcanisers give different readings of tyre pressure.
For example, after the first vulcaniser has said that your tyre is over- inflated, another one reads it as under-inflated. Then a third vulcaniser will commend your decision to check the tyre pressure as any further delay could have been suicidal.
“What some of these guys do is that they
don’t even read the pressure at all. They fix the gauge and, in a
twinkle of an eye, they shout, ‘No air.’
“The truth is that the pressure may be
okay. But, they feel that admitting it may deny them the opportunity to
make extra money. So they will tell you that there is no air.
“They pretend to inflate the pressure
and turn around to reduce it and collect money from you,” Mr. Okoli
Udeh, who operates a commercial vehicle in the city, says.
Experts have warned motorists not to
inflate their tyres beyond 40psi or 280kpa. As if to buttress this, the
report posted on tyresafe.org says, “Don’t inflate your tyres above 40
psi or 280 kpa. By keeping them at their optimum pressure, your running
costs are also reduced. Under-inflated tyres require a bigger force to
make them turn, so your car uses more fuel. Additionally, tyres that are
not set to their correct pressure wear out more quickly.”
Beyond safety, some motorists cut fuel costs by maintaining accurate tyre pressures.
The Federal Road Safety Commission
recommends a complete tyre change after two years, but the life span
becomes shorter with inappropriate tyre pressure.
Most vulcanisers in Abuja are accused of
using faulty or low-grade gauges to read tyre pressures. Some of them
deliberately empty the air in the tyre, even when they know that the
reading is accurate, only to inflate it again. The owner of the vehicle
is promptly billed!
“The faulty gauges they use can only fetch one result: wrong reading. That is why vulcanisers keep telling you different stories.
“It looks like a deliberate ploy to get money out of motorists at any cost,” another resident, Musa Liman, argues.
Investigation shows that many of the vulcanisers lack the basic knowledge of some factors that may account for changes in tyre pressure.
For instance, experts say that the best
time to read tyre pressure is in the morning or before the vehicle is
used. This is because tyre pressure tends to increase on its own in hot
weather or after gliding on hot surfaces for a long time.
But, many vulcanisers lack this basic
knowledge. Thus, by lying that your tyre is under-inflated, though it
already contains too much air, they endanger your life.
Stressing this point further,
Tyresafe.org notes, “Recommended tyre inflation pressures are always for
cold tyres, which means you should check the tyres in the morning
before the vehicle has been driven.
“Driving heats up the tyres and causes
the air inside to expand. If you check the tyres right after driving,
therefore, the readings will be at least several pounds higher than
normal.
“Hot weather raises air pressure inside
the tyres, while cold weather lowers it. So air may have to be added or
vented from the tyres to compensate for seasonal variations as well.”
A vulcaniser named Sulieman Salihu blames the gauge used by most of his colleagues to read pressure for the problem.
He notes that when a gauge reads incorrectly, a vulcaniser either adds air or reduces it.
Salihu says, “There are times when it is
obvious to everyone that a tyre needs air; you don’t necessarily have
to read it because it is obvious. The tyre is without air, you can even
feel it with your hands. The driver himself drove the car to your shop
after detecting that the air is low. What do you do? I believe that it
is not everybody that wants to cheat.”
To inflate a single tyre costs N50 in the city; an average of N200 for four tyres, if you have to inflate all.
The driver spends about the same amount again if the next vulcaniser comes
up with a different pressure reading – a hole in the pocket for some
people, considering that pressure checks are recommended every week.source: http://www.punchng.com/feature/nations-capital/tricks-vulcanisers-use-to-defraud-motorists/
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