Winter Tires

In Southern Alberta weather can change drastically overnight. Let our Tire Experts at Davis GMC Buick Lethbridge make sure your vehicle is winter ready! We offer both steel and alloy rim options and provide the top brand of winter tires that work best with your vehicle.

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Winter Tire Promotion, Davis GMC Buick Lethbridge
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or Request a Quote Below

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Tire Wear Tips

Tread wear indicators appear when the tires only have 2/32 inch or less of tread remaining. Rubber in tires ages over time. This also applies to the spare tire (if available), even if it is never used. Multiple factors including time, temperature, loading conditions and improper inflation, affect how fast a tire ages.


  • You can see three or more tread wear indicators around the tire
  • The tire cord or fabric is showing through the rubber
  • The tire tread or sidewall is cracked, cut, or snagged deep enough to show cord or fabric
  • Bulge or cracks on tire sidewall
  • Uneven tire wear
  • Flat spots on tire
  • Center of tire is worn
  • The tire has a puncture, cut, or other damage that can’t be repaired correctly

There are many factors that can cause tire wear such as your driving style and tire maintenance habits. Tire replacement is absolutely needed when the tread wear indicators appear. A tire’s built-in tread wear indicators look like narrow strips of smooth rubber across the tread and become visible as the tire surface wears.


A quick and easy way is with a tread depth gauge. It measures tread depth from 0 to 19/32 inch. These tools come in either digital or mechanical versions.

Tires age when stored normally mounted on a parked vehicle. Park a vehicle that will be stored for at least a month in a cool, dry, clean area away from direct sunlight to slow aging. The area should be free of grease, gasoline, or other substances that can deteriorate rubber. This also applies to unmounted tires.

Parking for an extended period can also cause flat spots that may result in vibrations while driving. When storing a vehicle for more than a month, remove the tires or raise the vehicle to reduce the weight from the tires.

Tire rotation is the practice of moving your vehicle’s wheels and tires from one position to another to help promote even tire wear. Even tire wear will help with the life of your vehicle’s tires. It is important to rotate your tires at the intervals recommended by your Owner's Manual. It is recommended that a trained professional rotate your ties and torque to required specifications to help them keep working properly and as designed.

It’s important to rotate your tires according to the correct tire-rotation pattern. Doing so can prolong the life of your GMC tires and can reduce the risk of sudden tire failure. Front tires encounter different tasks than the rear tires. And a front-wheel-drive vehicle’s tires perform different tasks than those on a rear-wheel-drive vehicle. See the Maintenance Schedule section in your Owner’s Manual for additional information about your specific vehicle.

Proper wheel alignment is key to the life of your tires. If your vehicle is misaligned, it can cause your tires to wear unevenly, and you may experience handling problems such as pulling or abnormal vibration.

Tires and wheels are aligned and balanced at the factory to help provide best overall performance. Adjustments to wheel alignment and tire balancing are not necessary on a regular basis. Consider a wheel alignment check if there is unusual tire wear or if your GMC vehicle is significantly pulling to one side or the other.

A tire that is out of balance often affects ride quality and can shorten the life of tires, bearings, shocks, and other suspension components. If the vehicle is vibrating when driving on a smooth road, the tires and wheels may need to be rebalanced.

Camber is the tilting of the wheels from the vertical when viewed from the front of the vehicle. When the wheels tilt outward at the top, the camber is positive. When the wheels tilt inward at the top, the camber is negative. The amount of tilt is measured in degrees from the vertical. Camber settings influence the directional control and the tire wear.


  • Too much positive camber will result in premature tire wear on the outside of the tire and cause excessive wear on the suspension parts.
  • Too much negative camber will result in premature tire wear on the inside of the tire and cause excessive wear on the suspension parts.
  • Unequal side-to-side camber of 1 degree or more will cause the vehicle to pull or lead to the side with the most positive camber.

Caster is the tilting of the uppermost point of the steering axis either forward or backward, when viewed from the side of the vehicle. A backward tilt is positive and a forward tilt is negative. Caster influences directional control of the steering but does not affect tire wear. Caster is affected by the vehicle height, therefore it is important to keep the body at its designed height. Overloading the vehicle or a weak or sagging rear spring will affect caster. When the rear of the vehicle is lower than its designated trim height, the front suspension moves to a more positive caster. If the rear of the vehicle is higher than its designated trim height, the front suspension moves to a less positive caster.


  • With too little positive caster, steering may be touchy at high speeds and wheel returnability may be diminished when coming out of a turn.
  • If one wheel has more positive caster than the other, that wheel will pull toward the center of the vehicle. This condition will cause the vehicle to pull or lead to the side with the least amount of positive caster.

Always visit a Certified Service expert technician if you experience any of these situations. Check your Owner’s Manual for more information about wheel alignment and tire balance on your specific vehicle.

Air is a gas, expanding when heated and contracting when cooled. For most of North America, fall and early winter are especially important times for checking tire pressure on your GMC vehicle – as the ambient temperature falls, tire pressure goes down. A good rule of thumb: with every 10 degrees Fahrenheit of temperature change, tire pressure changes about 1 psi–higher as temperatures rise, lower as they fall.


  • Premature or irregular wear
  • Poor handling
  • Reduced fuel economy
  • Overheating, which could lead to a blowout


  • Unusual wear
  • Poor handling
  • Rough ride
  • Greater risk of damage from road hazards

Check your GMC tires at least once a month when the tires are cold, meaning the vehicle has not been driven for at least 3 hours or no more than 1 mile. The Tire Information Label located on the inside of your vehicle’s door frame has the recommended cold tire pressure for your GMC vehicle. Use a quality gauge. Don’t try to eyeball it - radial tires may appear fine even when they’re underinflated. Look for objects that can get wedged in the tread—they’ll work themselves even further into the tire and cause air loss. To make sure you’re covered, every check of your tires should include a check of your spare (if available), as well.


The Tire Pressure Monitoring System (TPMS) helps with vehicle handling and control by keeping you updated on the vehicle’s tire pressure. The TPMS works by sending a signal from the pressure sensor, located in your vehicle’s wheel, to the instrument control panel which alerts you when the tire pressure is low. It is recommended that a trained professional inspect, and, if necessary, service your TPMS to help ensure it is working properly.


If the Tire Pressure Monitor light illuminates and stays solid with a Check Tire Pressure, Low Tire Pressure, or Add Air To Tire message, then check and adjust all tire air pressures to the recommended levels. Next, drive the vehicle to turn the light off.

If the Tire Pressure Monitor light appears as a blinking yellow lamp for more than one minute and stays solid, then diagnostic service is needed. If your TPMS is not functioning properly, it cannot detect or signal a low-tire condition.