How to know when car tires need replacing

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How to Know when Car Tires Need Replacing
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• Ever wonder when to replace your worn car tires?
  The performance of your car tires is critical to
  the safety, performance and efficiency of your
  vehicle the N.H.T.S.A. estimates that about 200
  fatalities annually may have been caused by tire
  failures. Most tires are designed to provide
  similar performance throughout their lives.
  However, at some point they start to lose
  performance in terms of their traction and
  braking ability. Here are a few tips that should
  help you decide if it is time to start shopping
  for a new set of tires and avoid spending more
  than necessary.

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• Understand that the primary function of tread on
  a tire is to divert water from beneath the tire
  to improve traction and avoid hydroplaning on wet
  roads
• Tires become unsafe when they're worn, and once
  the tread is down to 1/16th of an inch (1.6mm),
  the tire is no longer safe.

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• Look at the tread pattern.
• All tires sold in the United States and other
  countries have what are called "tread wear bars."
  These are small bridges that form between your
  treads. Look at the tread pattern and you'll see
  the beginnings of these bars start to form
  between the treads, or running across the tires.
  As the tires wear, these bars will become flush
  (level or even) with the tire's tread. At this
  point, it's time to replace the tires. 

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• Check the tread by using the "penny test.
• Take a penny and place it upside down with
  Lincoln facing you in the center of the tread (at
  the thickest part of the tire).If you can see the
  very top of Lincoln's head or the copper above
  it, replace the tires immediately.
• If Lincoln's hair on the top of his head is
  partially visible, it is time to go shopping for
  tires.
• If you cannot see the hair on the top of his head
  (if the coin is inserted enough that the tire
  tread is at least as deep as Lincoln's forehead),
  your tires do not need replacing yet.

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• Use a tread depth indicator or gauge.
• You can use a special tread depth indicator or
  gauge tool to measure your tire's tread. If you
  don't already own one, the gauge is cheap to
  purchase from an auto parts dealer and it's easy
  to use.You may be able to find a downloadable
  tread depth gauge by searching online.
• Alternatively, it might be easier to pop in to
  your regular tire place and ask them to check it
  for you likely they'll do this for free if
  you're regular customer.

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• Know the legal requirements
• Worn tires should be replaced as a matter of
  common sense to assure safety, but in some
  jurisdictions, there are also legal requirements
  to replace worn tires. In many US States, tires
  are considered to be legally worn out when they
  have worn down to 1/16" (1.6mm) of their
  remaining tread depth.3 In the UK, the minimum
  depth of the tread on tires (tyres) is 1.6
  millimeters across the central ¾ of the tread
  around the whole tire (tyre).

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• Make note of any irregular tread wear.
• This could indicate a wheel misalignment, the
  need for a tire rotation, or both. Uneven tread
  wear is a sign that you need to take your car in
  for servicing.If uneven tire wear is extreme or
  if tires wear out much faster than expected, have
  a competent tire workshop check your suspension
  and correct it as necessary before replacing
  tires. Improper alignment or worn suspension parts
  can dramatically shorten a tire's life.
• It is a good idea to rotate your tires from front
  to rear in pairs. Take both front tires and move
  them to the rear and vice versa.

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• Check for any abnormal bulges or "bubbles" in the
  sidewall. 
•  A sidewall bulge indicates that the rigid
  internal frame of the tire has been damaged and
  cracked, allowing air pressure to reach the
  flexible outer layers of the tire. Such damage
  could be caused by driving through a large
  pothole or over a curb, or by driving with low
  tire pressure. Continuing to drive on a tire that
  has a sidewall bulge is dangerous. The structural
  integrity of the tire has been significantly
  reduced, greatly increasing the likelihood of a
  sudden failure or blowout at highway speeds,
  which could cause a serious accident. Any tires
  with sidewall bulges should be replaced
  immediately, regardless of the tread status.

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• Replace the tires at least every 6 years.
• If you're not sure, the minimum replacement time
  that is recommended by the NHTSA is six years
  regardless of use, with 10 years being the
  maximum service life for tires. Check your
  owner's manual for specific recommendations
  related to your car. And always err on the side
  of caution if you suspect your vehicle has tires
  that are over six years of age

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• Notice a vibration in the steering wheel.
• If your tires are worn unevenly, you may feel a
  vibration in the steering wheel when you are
  driving. Your tires probably need to be
  rebalanced. If that doesn't stop the vibration,
  more than likely the tire is damaged.Vibrations
  may also be caused by tires that are "cupped,"
  meaning they have a cupped or scalloped
  appearance around the tire. This occurs when
  tires haven't been rotated regularly.

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• Check for dry rot.
•  If you see little cracks all over your tires, it
  means that the rubber is breaking down. Tires
  with dry rot can fall apart, separating from the
  steel belt causing damage to the exterior of the
  car.

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tire service

• Bright Spark
• Al Quoz Industrial Area 2,
• Near Oasis Village Dubai
• 9714 3386638