To maximize safety, you should replace your tires

Question

Question: To maximize safety, you should replace your tires

Options:

1.  when they are 3 years old
2.  when there is no tread remaining on the tire
3.  after you have more than 40,000 miles on the tires
4.  when they have worn down to 4/32 of an inch of the tread depth

Answer 1

4. When they have worn down to 4/32 of an inch of the tread depth

To maximize safety, you should replace your tires when they have worn down to 4/32 of an inch of the tread depth.