Thanks, Chap, for the good wishes and the excellent advice. I will take heed to all of it! Can you explain to me what a Tire Pressure Monitoring System is? As you know, we are first-time rv'ers, so we have a great deal to learn. I'm sure I could look it up, but I'd rather just ask you - ha-ha! I'm hoping we will be able to do the same as you did and not have to change the tires until at least a few years. Wish us luck! I spoke to the dealer and he said that no one he has sold a TM to has had problems with the Marathons, at least to his knowledge. Do you all take along a portable air compressor w/you, too? I didn't realize you have to keep the tires out of the sun, too. Why is that? I will also have to remember to ask the dealer if the 08 TM's have the lift kit or Dexter 45-degree axle. Thanks again for all your recommendations. Linda
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