Tire Alignment

Alignment refers to the adjustment of a vehicle's front and rear suspension parts. If your alignment is off, your vehicle isn’t safe to drive. View the animation below to understand the three main adjustments made during alignment:

Caster

Caster is a bit tough to define. If you’re viewing the side of a vehicle, the caster angle identifies the forward or backward slope of a line drawn through the upper and lower steering pivot points. Think of a motorcycle and its front steering forks and front tire. Its angle is towards the rear of the motorcycle, so it has positive caster. Negative is just the opposite. Long story short, positive caster helps your vehicle go straight, much like the motorcycle.

Camber

Camber is the angle of the wheel, in degrees, when viewed from the front of the vehicle. Positive camber is when the top of the wheel is leaning out from the center of the car. Negative camber is when the top of the wheel is leaning into the car. If the wheel leans too far from the center, uneven wear will occur. (However, negative camber helps racing cars improve cornering.)

Toe

Toe is the difference in the distance between the front of the tires and the back of the tires. Usually, tires are set so that they are parallel with each other. If the fronts of the tires are closer, the wheels are toe-in. If the rears of the tires are closer, the wheels are toe-out.

When to Check Alignment

 

Daily impacts such as potholes and railroad crossings, as well as more severe circumstances like a car accident, can knock your vehicle out of alignment. You should have the alignment checked if:

 

  • You’ve hit something substantial
  • You see a wear pattern developing on the shoulders (outer edges) of the tires
  • You notice a difference in your vehicle’s handling

Although not available online, we may be able to help you find a tire that fits your selection.

Please tell us the year, make and model of the vehicle for which you would like a tire recommendation. Also please let us know which tire features are important to you. Finally, let us know the area of the country where you do most of your driving. This way, we can provide you with our best recommendation.

Please click the "CONTACT US" button below to allow our Consumer Care team to help you find a tire that matches your selectionorview all tire sizes available.

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Please Note

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  • In order to find your vehicle's options please check the following:
- The vehicle's window sticker, or a decal usually located on the side or rear of the vehicle
- The vehicle owner manual
- Your original sales invoice
  • Your vehicle was manufactured with multiple tire sizes. Please select your size.

    Knowing your tire size can help save time at the tire retailer. It also enables you to make an informed tire purchase.

You can find your vehicle's original equipment tire size in one of the following places:
1. On the tire placard located on the driver's door jamb 
2. In your owners manual
3. On glove compartment door
 4. Inside the fuel hatch or trunk lid

You can also check your existing tire's designation on the sidewall. However, there is no guarantee that these are the original tire size unless they came on the vehicle new.

 Note: Tire Size Image. Show sidewall and tire placard. Example below from UK.
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  • Find the exact tire quickly using your tire size. Check your owner's manual or tire sidewall to find the required specifications.

  • This three-digit number represents the width of the tire in millimeters (mm), measured from sidewall to sidewall. Since this measure is affected by the width of the rim, the measurement is done when the tire is on its intended rim size.  <div><img src="/assets/mi/system/images/contextual-help/R2-width.png" /></div>
  • The aspect ratio is the relationship of a tire's sidewall height to its section width, expressed as a percentage. In this example, the tire sidewall height is approximately 55% of the tire width. The higher the number, the taller the sidewall; the lower the number, the lower the sidewall.<div><img src="/assets/mi/system/images/contextual-help/R2-aspect.png" /></div>
  • The diameter of the rim in inches.<div><img src="/assets/mi/system/images/contextual-help/R2-diameter.png" /></div>
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  • If you know the name of the tire are looking for, select the tire from the list below.

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  • All tires fall into certain categories. If you're wanting to do a broad search of our tire lines, use the list below.

  • All tires fall into certain categories. If you're wanting to do a broad search of our tire lines, use the list below.
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