The groove where the wear indicator is located is 1/16 inch (1.6 mm) shallower than elsewhere on the tire. If the tread has worn so that the indicator is exposed, replace the tire.
Worn out tires have poor traction on wet roads.
Honda Civic Owners Manual. Precautions for Opening/Closing the Trunk
Opening the trunk
Open the trunk all the way.
If it is not fully opened, the trunk lid may begin to close under its
own weight.
Closing the trunk
Keep the trunk lid closed while driving to:
Avoid possible damage.
Prevent exhaust gas from leaking into the vehicle.
Exhaust Gas Haz ...