HONDA 2015 Civic Si Coupe - Owner's Manual - Manual (Page 378)

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uu Checking and Maintaining Tires u Wear Indicators
Main
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Wear Indicators
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.
Tire Service Life
The life of your tires is dependent on many factors, including driving habits, road
conditions, vehicle loading, inflation pressure, maintenance history, speed, and
environmental conditions (even when the tires are not in use).
In addition to regular inspections and inflation pressure maintenance, it is
recommended that you have annual inspections performed once the tires reach five
years old. All tires, including the spare, should be removed from service after 10
years from the date of manufacture, regardless of their condition or state of wear.
1 Checking Tires
High speed driving
We recommend that you do not drive faster than the
posted speed limits and conditions allow. If you drive
at sustained high speeds (over 112 mph or 180
km/h), adjust the cold tire pressures as shown below
to avoid excessive heat build up and sudden tire
failure.
*1: Optional for U.S. Si models (summer tires)
Tire Size P215/45R17 87V
Pressure 35 psi (240 kPa, 2.4 kgf/cm 2 )
Tire Size 225/40R18 92V
225/40R18 92Y
*1
Pressure 36 psi (250 kPa, 2.5 kgf/cm 2 )
Models with P215/45R17 87V tires
Models with 225/40R18 92V tires
Models with 225/40R18 92Y tires Example of a Wear
Indicator mark