Find out what kind of fluid they use, especially if the dealer is in the lower 48. I had calcium chloride in my JD 3020 tires. After 15 years, the rims were starting to show signs of corrosion around the valve stems. I went with wheel weights on the new Kubota. No one around here services tires with anything other than calcium chloride. How about where your are? That might be the deciding factor. Here, it is $45 bucks more to fix a flat if the tire has CC in it.