How to know when car tires need replacing - PowerPoint PPT Presentation

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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. – PowerPoint PPT presentation

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Title: How to know when car tires need replacing


1
How to Know when Car Tires Need Replacing
2
  • 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.

3
  • 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.

4
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5
  • 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. 

6
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7
  • 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.

8
  • 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.

9
  • 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.

10
  • 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.

11
  • 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).

12
  • 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.

13
  • 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 consult a tire
    service center and to be replaced immediately,
    regardless of the tread status.

14
  • 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 or consult a tire
    service centre.

15
  • 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.if you feel
    such vibrations your tire need tire service.

16
  • 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.

17
tire service
  • Bright Spark
  • Al Quoz Industrial Area 2,
  • Near Oasis Village Dubai
  • 9714 3386638
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