1998 Lexus GS300 Q&A

1998 Lexus GS300 Question: at what mileage should the timing belt be replaced

I have 100,000 miles have not replaced timing belt is it time? -
Answer 1
RepairPal shows the timing belt for this car being recommended at 90K: http://repairpal.com/handler/KvmlqPfvG5pR7qqgcVnn Highly recommended to have that service performed immediately. If you throw a timing belt, you run a risk of doing serious engine damage. -
Answer 2
My mechanic keeps telling me I am tempting fate but my 2001 Lexus has 152000 miles and the original timing belt and water pump -