I plan to store my 2015 Corvette stingray in a heated garage for the six month winter up in Minnesota. I just put on new A/S3+ tires. The tire salesman suggested I put the car on jackstands during the storage so that the tires wouldn’t get flat spots. I also know there are products out there that you can roll the car onto to keep the tires from flat spotting. Is this necessary? What do you think?