Thanks for the responses everyone! As I was typing my note yesterday, I realized I was answering my own question. Why would I risk going anywhere with my MH that has 9+ year old tires on them? All your comments just solidified my decision to order new tires right away. I put my order in for all new Toyo M144's and will get them installed in the near future. Yea it's a big outlay of cash, but now I hope I don't have to worry about it for at least 7 years or so! Thanks everyone for the great input and safe travels!