In a car’s safety a vehicle’s tires play a important role. Tires are the only parts of the car that physically touch the ground, they are one of the key factors affecting a vehicle’s handling and braking, and overall highway safety and they do give warning signs of its failure. Getting regular checks is quick and easy, and a worthwhile investment of time in your and your family’s safety.Visually inspect your tires on a regular basis. If you note any of the following early warning signs, have a professional inspection performed, check and correct items that may be causing the condition, or replace your tires.

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  • Cuts or  cracking in the sidewalls or tires.
  • Uneven tread wear. This can be caused by improper inflation, misaligned wheels, damaged tires, or by problems with suspension parts.
  • Excessively worn tread. Most modern tires have tread-wear indicator bars running across the tread, which signal the minimum allowable tread depth of 1/16-inch. When the tread wears down to these bars, it’s time for new tires. Inexpensive tread-wear gauges are available at auto-parts and tire stores.
  • Bulges or blisters. If you see a bulge or blister on the sidewall, replace the tire at once. These signal potential weak spots that could lead to tire failure.
  • Excessive vibration. Tire vibration may be a sign a wheel is misaligned, unbalanced, or bent. It could also signify internal tire damage. Don’t ignore vibration: Have the vehicle serviced at once.

Surveys have shown that as many as half the cars on the road may be riding on one or more under inflated tires. Part of the problem is that tires lose air through the rubber and at interfaces with the wheel and valve, sometimes so slowly that many people don’t realize it has happened. Seasonal temperature changes may also cause the tire pressure to drop.

Because the sidewall flexes more at lower tire pressures, under inflation compromises the driving control that a tire is designed to provide. Even a small pressure loss—such as 4 psi—can affect a car’s handling, making it harder to control. It can also make the ride softer and the car wallow. In addition, under inflated tires lower a vehicle’s fuel economy, which can cost you more money at the pump.

A sidewall that flexes too much can also cause heat to build up excessively, which can shorten a tire’s life and possibly lead to a tread separation or blowout.

  • Don’t judge the pressure by eyeballing a tire. Modern radial tires bulge slightly, making them look a little under-inflated, even when they’re not.
  • At least once a month, use a tire gauge to check the pressure in all four tires and the spare. A tire-pressure gauge is available for as little as Rs 190 to Rs 250 at auto-parts stores.
  • Set the tires to the automaker’s recommended tire pressure. This is printed on a placard in the car, either on a doorjamb, the fuel-filler door, or on the inside of the glove-compartment lid. Don’t go by the “maximum inflation pressure” imprinted on the tire.
  • Measure the pressure with the tires cold, before they’ve been driven more than a mile or two. As the vehicle is driven, the tires heat up and the pressure rises, which makes it more difficult to set them to the correct cold-tire pressure.

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