I have a 2005. My dealer says that timing belts should be changed between 60-80k (of course he has a monetary reason to say that). I would wait until it goes but I have a long 2800 mile drive ahead of me (round trip) and I am wondering if it's really necessary to change it before I leave or not? I do live in a hot sate - Florida. I don't know if heat causes them to wear faster or not.