Published March 17, 2014
| Consumer Reports
Anything made with rubber can become more rigid as temperatures get very low, as evidenced by some ultra-high-performance summer tires being used by General Motors and other manufacturers on some vehicles. These tires not only lose grip in cold weather, but they risk cracking, compromising longevity.
This is a significant concern for buyers in northern climes, with GM notably advising not to drive such vehicles during winter chills at the risk of developing damaging cracks. It is likewise important to owners looking forward to spring drives in their performance cars to inspect the tires thoroughly.
GM bulletin #13-03-10-001A: "Information on Tire Cold Weather Cracking" – (Jan 30, 2014) advises “avoid driving, moving, or test-driving vehicles equipped with high-performance summer-only tires below 20º F as operating at these temperatures can cause damage to the tires.” The car models affected include the 2012-2014 Buick Regal GS, 2014 Cadillac CTS Vsport, 2012-2014 Chevrolet Camaro ZL1 and Z/28, 2014-2014 Chevrolet Camaro SS 1LE, and the 2014 Chevrolet Corvette Stingray and Stingray Z51, and SS sedan.
In GM’s quest to deliver the ultimate handling in these cars, they built performance tires with essentially a racing compound to deliver the goods. These tires are great for driving in temperate areas and are ideally suited for track use, but the practicality of the tires stops there.
Reaching out to a GM tire supplier, Pirelli, a spokesman explained that the performance tread compound becomes so stiff on such tires that it can lead to cracking when deformed in cold weather. In measuring the hardness of numerous brands of summer tires at 0º F, we have found the tread becomes almost inflexible and the tires lose their bounce when dropped. The cracking is characterized as cosmetic, but in our experience any cracking shouldn’t be taken lightly as it can evolve over time. If there is crack, you should replace the tire. (GM’s service bulletin also recommends discarding a tire with cracking.)
Here is what you need to do if you own or are considering purchasing one of the GM cars mentioned in the bulletin or any car that comes with summer tires.
Learn more about tires in our tire buying guide.
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