I had the same problem at local Costco locations. I wanted the larger 70s Revos, but they wouldn't do it. However, the rep did tell me if I were to unmount all 4 of my wheels/tires and brought only those to the store, they would sell me the larger size. So, if you don't mind having your 4R on blocks or jack stands during the time the wheels are missing, then go for it! I know it's a real PITA, but it's worth it if you have the time & tools to take advantage of the $ discount through Costco. BTW, I saw a tv commercial today and Bridgestone is giving $100 off a set of 4 tires at a participating retailer (I don't know if Costco will do that since it's already wholesale/discounted; I've only seen up to $60 off).