97 Toyota Tacoma when to change timing belt?

It's been 92K miles since my timing belt was changed in my 3.4L V6 Tacoma. The manufacturer's maintenance schedule says to replace it every 60K miles ONLY if %26quot;Extensive Idling or Low-Speed Driving for Long Distances%26quot; for example as a police car or cab/delivery vehicle. My truck is not driven this way. When should I change the timing belt?97 Toyota Tacoma when to change timing belt?a timing chain or belt should be replaced at every 100,000 miles on every car, truck, van and suv. toyota falls under that catagory.