Has anyone found a good replacement tire for the 2019 QX50? Mine came with Bridgestone Ecopia 422plus run-flat tires that now have 23k miles and are down to 2/32 tread depth. No shop around me carries a run-flat replacement for this vehicle - not even Costco. The dealer can replace the tires with the same tire (not a great option) at a $50 per tire mark up over the Bridgestone MSRP. Any suggestions?