The Z shop here in Nashville (Crawford Z Car Service, in business since the late 70s) services my 95 TT, and 71 240Z. They recently replaced a 9 year old timing belt with only 11k miles since replacement by the previous owner.
Even though Nissan recommends more ofter (see below), they advised that 10 years OR 60k miles is the absolute maximum. I considered purchasing a 96 model that still had the original timing belt in 2017, and was advised that a test drive might not be a good idea, and driving the car home if purchased (650 miles) was out of the question until the belt, etc. was replaced. The owner subsequently did so in order to be able to sell the car.
From:
Timing Belt Service - Z32 Wiki.
There are actually two forms of the Timing Belt service: the 60,000 mile timing belt replacement and the 120,000 mile replacement. The FSM recommends replacing the belt every 60k or 48 months, whichever comes first. Because the related components (like the idler pulleys) are so vital in maintaining engine health, it's highly recommended to just do a complete 120k service instead of the basic 60k. Other components, like the water pump and thermostat, are not necessary to maintaining timing belt functionality obviously. However, replacing these components is most easily performed while the engine is dismantled for the timing belt service, so it's the perfect time to replace them.
