when should you put new spark plugs on a new car?

My dad has a 2003 Toyota Corolla with 45,000 miles on it
it says no scheduled tune ups for 100,000 miles, so i dont plan to tune it up, but i want to at least put fresh spark plugs on it
when should i?

If it has platinum plugs they probably don't need to be changed till 100k

Around 100k to 130k...