I've got about 50% left on factory ag tires, and want to make the change to R4's on my L3130. Want to buy a good tire, but don't have any idea of what it might cost here in North Texas, for the rim/tire swap. I don't mind trailering 50-100 miles from the Sulphur Springs area, if anybody knows a good place/dealer to get it done. Any help will be appreciated.