See also:

Front Brake Disc/Pads, Calipers
Check the pads for excessive wear, discs for run out and wear, and calipers for fluid leakage. ...

When to Replace Tires
The original tires on your car have tread wear indicators. The location of tread wear indicators is shown by the "TWI" or "" marks, etc., The tread wear indicators appear whe ...

Indicator symbols on the instrument cluster
...