FAQs – Tires 101

  •  How much air should I put in my tires?

    Tires should be inflated to the pressure recommended by the manufacturer of your car.

    • 1.  Check tire inflation regularly
    • 2.  Check at least every two weeks and before any long trips.

    Under inflation: The worst enemy a tire can have is too little inflation pressure. An under inflated tire generates excessive heat, which reduces fuel economy and increases tread wear in the shoulder area. Inflating your tires to, but not over, the maximum inflation pressure specified on the tire sidewall can improve your fuel economy and extend tire life. The maximum inflation pressure is 32 psi for load range B alphanumeric sizes and 35 psi for standard load P-metric sizes.


    Always check tire pressure in the morning before you drive or after driving a mile or less. Beyond that, check the tire pressure only after the tires have cooled down for an hour or more.


    Radial tires:Because their normal shape has a slight sidewall bulge, radial tires require even more careful inflation checks. To be sure your tires have the correct air pressure, always use a good air pressure gauge.


    Vary inflation with load:When your car is carrying extra weight, such as on a vacation trip, a little additional air should be added to the tires. We recommend increasing the air pressure 4 pounds over the car manufacturer’s recommended cold tire pressure — but not over the maximum inflation limit shown on the tire’s sidewall.


    Never “bleed” or reduce air pressure when tires are hot. A tire’s air pressure will automatically increase as its internal temperature increases. This increase is normal and should not be adjusted. Check and adjust inflation only when tires are cool. Check regularly to see that your tires have valve caps. Be sure they are screwed down finger-tight. Valve caps should have a rubber seal which provides a secondary air seal and keeps dirt and moisture out of the air valve.

  • How to check your tires’ air pressure

    1. Make sure the tires are “cold” (vehicle hasn’t been driven for more than 2km) so the air in the tires isn’t expanded from heat.


    2. Look in the owners’ manual or (on most vehicles) on the inside of the driver’s side door for the standard cold tire inflation pressure. This number is the lowest PSI one would inflate the tires to and is suggested by the car’s manufacturer. Read below for reasons inflation may be placed slightly higher.


    3. Unscrew the valve stem cap from the valve stem on the tire. The valve stem is a black pencil-sized extension near the hubcap, about 1? (2-3 cm) long.


    4. Press the air pressure gauge onto the valve stem and record the reading given. If there is a hissing sound, the gauge is not tight enough for an accurate reading. Adjust the angle of the gauge for a better reading if necessary.


    5. Note that if the reading is the same as the manual’s specifications, you are done after checking all other tires for the same pressure. Inflate tires with a lower reading and re-check the inflation with a pressure gauge.


    6. When you’re done, replace the valve stem cap. The cap helps hold an air seal, and it keeps dirt and moisture away from the valve mechanism in the valve stem.

  • Can I run a tire with a cut in it?

    If the tire contains steel, the answer is no. It will rust quickly if exposed to the elements.

  • Can I replace just one tire?

    Yes, but we don’t recommended it. A single new tire will wear down faster if it is paired with differently-aged tires. For best results, replace your tires in pairs.


    Four-wheel and all-wheel drive vehicles must purchase new tires in sets of four. All four tires must have identical tread heights for the 4 wheel drive transmission case to function properly.

  • Will the front tires affect the way the back tires wear?


  • What should I look out for to stay safe?

    Low air pressure is the #1 danger. We recommend that you check your air pressure at least once a month. At Wonderland Tire, we offer free pressure checking and rotations with every new set of tires. We are happy to provide regular tire maintenance for your vehicle.

  • How do I know when I need new tires?





    1.  Look at the tread pattern. All tires have what are called “tread wear bars”. These are small ridges that form between your treads. Look at the tread pattern and you will 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 with the tire’s tread. At this point it is time to replace the tires.


    2.  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.

  • What do the numbers on a tire mean?

    (See this link for a helpful info.) http://auto.howstuffworks.com/tire2.htm

  • What should I do if I notice a vibration?

    Vibration is an indication that your car has something that needs attention. The tires should be checked for irregular wear to help determine the possible cause and correction of the vibration. If left unattended, the vibration, if caused by tires, could cause excessive tire and suspension wear. It could even be dangerous.

  • Do my new tires require any special treatment?

    The new tires that you put on your car will probably feel different from the tires that were replaced. You should drive carefully until you are familiar with their performance and handling. Take special care when braking, accelerating, cornering, or when driving in the rain, because these are the times when the differences will be most noticeable.