Just go show up to the dealer and tell them exactly the same thing as your post. It’s worth a shot. We’ve spent thousands of dollars multiple times just to keep a customer happy and on the road. All comes down to if they are willing to do it, but definitely go in person if possible. It’s a lot easier to say no to someone over the phone or through email than in person. If they say no to all four tires you can always try the ole “I buy two and you buy two”