Tyre Tread Depth Measurement:
Use a tread depth gauge: Place the tread in the groove of the track. If you see less than 2/32 inch, it’s time to replace your tires.
Rotating Tires:
Make a pattern: Refer to your vehicle’s owner’s manual for a suggested rotation pattern. Tires should generally be replaced every 5,000 to 7,000 miles.