Green X Challenge

The MICHELIN® GREEN X® Challenge, a premier motorsports environmental competition, challenges all American Le Mans Series Prototypes and GT entries in the field to maximize their performance on the track and to accelerate the development of new technologies and energies through motorsports competition.

 

The MICHELIN GREEN X Challenge recognizes the cleanest, fastest, most efficient cars at each ALMS race.

 

Overseen by the Green Racing steering group, comprised of representatives of the U.S. Department of Energy, the Environmental Protection Agency, SAE International and the sanctioning International Motor Sports Association, the scores are determined by a combined score for “Clean, Fast and Efficient” performance.

 

First introduced by MICHELIN in 2006 as an Energy Efficiency award at the 24 Hours of Le Mans, the program was extended to the full European-based Le Mans Series in 2007 and launched in North America in early 2009 as the MICHELIN GREEN X Challenge.

 

For the latest MICHELIN GREEN X Challenge race releases, visit: The Michelin Alley.

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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  • 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
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  • 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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  • 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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