My 2017 GS (non Z07) has been in service for 17 months and I'm fortunate to be able to drive it year round as we spend winters in AZ and summers in AB. Current mileage is 13,500 MILES and I'm going to need new rear tires soon. I don't drive aggressively very often and expected life is around 15,000 miles. Looking for suggestions on tire dealers in Calgary aside from Corvette dealerships to get Michelin replacements so I can compare the cost to getting new tires in AZ before I head back north for the summer.