Honda 2003 Civic Coupe Owner's Manual page 234

You should get your own tire
pressure gauge and use it whenever
you check your tire pressures. This
will make it easier for you to tell if a
pressure loss is due to a tire problem
and not due to a variation between
gauges.
Recommended Tire Pressures for
Normal Driving
The following chart shows the
recommended cold tire pressures for
most normal driving conditions and
speeds.
(U.S.: DX, HX, LX, Canada: DX)
Tire Size Cold Tire Pressure
for Normal Driving
P185/70R14 87S 30 psi (210 kPa , 2.1
kgf/cm )
(U.S.: EX, Canada: LX, Si)
Tire Size Cold Tire Pressure
for Normal Driving
P185/65R15 86H 30 psi (210 kPa , 2.1
kgf/cm )
The compact spare tire pressure is:
60 psi (420 kPa , 4.2 kgf/cm )
These pressures are also given on
the tire information label on the
driver's doorjamb.
Tubeless tires have some ability to
self-seal if they are punctured.
However, because leakage is often
very slow, you should look closely
for punctures if a tire starts losing
pressure.
Tire Pressure Adjustment for High
Speed Driving
U.S. DX, HX, LX and Canadian DX
models only
Honda strongly recommends that
you not drive faster than posted
speed limits and conditions allow. If
you decide it is safe to drive at high
speeds, be sure to adjust the cold tire
pressures as shown in the next
column. If you do not adjust the tire
pressure, excessive heat can build up
and cause sudden tire failure.
(U.S.: DX, HX, LX, Canada: DX)
Cold Tire Pressure for
Tire Size Speeds over 100 mph
(160 km/h)
P185/70R14 87S 35 psi (240 kPa , 2.4
kgf/cm )
When you return to normal speed
driving, be sure to readjust the tire
pressure for normal driving. You
should wait until the tires are cold
before adjusting the tire pressure.
U.S. EX and Canadian LX, Si models
only
Tire Pressures for high speed
driving are the same as for normal
driving.
Maintenance
Tires
233