I shipped a 35in BFG MT via Fed-ex for 15$ But with a rim it would be hevier and probably around 25-30 via fed-ex. Give me a weight and zipcode and I'll let you know. I would consider buying the wheel too if the price was right.
Is it radial or Bias and what size? If its the right tire, I could reallly use it.
Let me know, Tim