Tread depth is below 2/32 of an inch
Tread wear indicators are flush with the tread
Tires have visible cracks, cuts, or splits
Sidewalls are bulging, blistered, or damaged
Tires are losing air frequently
You notice uneven or rapid tread wear
The tires vibrate excessively while driving
The vehicle pulls to one side due to tire wear
The tires are older than 6 years
The tires are older than 10 years, even if tread remains
You see exposed cords or fabric
The tires have punctures that cannot be safely repaired
Wet traction has noticeably worsened
Snow or off-road traction has significantly declined