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Learn about different tire types, and discover how the best fit for your vehicle and driving style helps support safety, comfort and performance.


All-terrain tires provide good performance on most road surfaces, in most weather conditions and for most off-road driving. The tread pattern on these tires may wear more quickly than others. If you notice irregular wear, consider rotating your all-terrain tires more frequently than the recommended 7,500 miles. Learn how to check your tire wear.


Run-flat tires can be driven on with no air pressure, so there is no need to stop to change the tire in case of a flat. You can continue driving for a short distance, at low speeds, unless there is permanent tire damage. To prevent permanent damage, keep speeds below 50 mph.


Sealant inside these tires reduces air loss in the tread area in the event you encounter common road hazards, such as nails and screws. Unlike traditional tires, this added protection allows continued, safe mobility for short distances. Be sure to have all punctures inspected for repairability by a Buick Certified Service expert as soon as possible.


Performance tires are designed for enhanced handling under demanding driving circumstances and generally have high speed ratings with a low aspect ratio for improved control. Not built for winter conditions.  


All-season tires are for year-round use. Their blend of technologies makes use of different compounds and detailed tread configurations, designed for most driving conditions such as snow, rain, heat, cold, etc. These tires offer good overall performance on most road surfaces and in most weather conditions.  


Summer-only tires utilize a special tread and compound optimized for maximum dry and wet road performance. This special tread and compound will decrease performance in cold climates and on ice and snow.


Winter tires are designed for increased traction on snow- and ice-covered roads. After installing winter tires, you may encounter decreased dry-road traction, increased road noise and shorter tread life. Watch for changes in your vehicle’s handling and braking. See your dealer for details regarding winter tire availability and proper selection.

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How will I know when I need new tires?

You’ll need new tires when the tread-wear indicators — called wear bars — appear. These wear bars look like narrow strips of smooth rubber across the tread and appear when it’s time to replace the tires. You should replace the tires if you can see three or more tread-wear indicators around the tire. Other indicators of tire wear include cord or fabric showing through the rubber, cracks or cuts in the tread or sidewall deep enough to show cord or fabric, bulges or splits in the tire, and punctures or damage that cannot be repaired correctly.

If you have questions about whether your vehicle’s tires need replacing, contact the experts at your nearest Buick dealer.

What are the parts of a tire?

Inner Layers:

  • Belts: Rubber-coated layers of steel, fiberglass, rayon and other materials located between the tread and plies. Belts provide resistance to punctures and help treads stay flat to contact the road
  • Inner Liner: The innermost layer of a tubeless tire that prevents air from escaping through the tire

Outer Layers: 

  • Tread: The portion of the tire that contacts the road
  • Sipes: Special slits within the tread that improve traction on wet, dirty, sandy or snowy road surfaces
  • Grooves: The spaces between two adjacent tread ribs that allow water to escape effectively

Side Structures: 

  • Sidewall: Protects cord plies and features markings and tire information, such as tire size and type
  • Shoulder: The outer edge of the tread that wraps into the sidewall area



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