NISSAN RECALL CAMPAIGN BULLETIN NTB08 033

User Manual: NTB08-033

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Classification: Reference: Date:
WT08-003 NTB08-033 March 11, 2008
TIRE PRESSURE INFORMATION
APPLIED VEHICLES: All Nissan
SERVICE INFORMATION
The air pressure inside a tire can change due to several factors, such as:
• Ambient temperature change
• Tire temperature change due to driving conditions
• Altitude change
• Natural pressure loss over time
It is important that tire pressure be checked often to keep it at the specified setting,
especially after seasonal temperature changes.
Any of the above factors can contribute to low tire pressure. Low tire pressure can cause a
Tire Pressure Monitor System (TPMS) to turn ON the Low Tire Pressure Warning Light (if
equipped). However, this does not mean that the TPMS is not operating as designed.
Each vehicle is equipped from the factory
with a TIRE AND LOADING INFORMATION
label.
This label lists the COLD tire pressure
setting for the original tires on the specific
vehicle.
Example
Figure 1
NOTE: Tires are considered COLD after the vehicle has been parked for 3 or more
hours, or driven less than 1 mile (1.6 km) at moderate speeds.
When setting / adjusting tire pressure, use the following information for reference:
Temperature:
• Tire pressure changes about 0.6 psi (4.1 KPa) for every 10°F (5.5°C) of temperature
change.
• Tire pressure may change significantly between a Cold reading and a reading taken
just after the vehicle has been driven for several miles.
• Seasonal temperature change can result in tire pressure that is low enough to cause
a Tire Pressure Monitor System (TPMS) to turn ON the Low Tire Pressure Warning
Light (if equipped).
This table shows an example of approximate tire pressure decrease as temperature
decreases with Tire pressure set to 35 psi (241.3 KPa) at 80°F (26.6° C)
Temperature Tire Pressure Tire Pressure Decrease
Degree F Degree C PSI KPa
PSI KPa
80 26.6 35.0
(set pressure) 241.3
(set pressure) 0.0 0.0
70 21.1
34.4 237.2
0.6 4.1
60 15.5
33.7 232.4
1.3 8.9
50 10
33.1 228.2
1.9 13.1
40 4.4
32.4 223.4
2.6 17.9
30 -1.1
31.8 219.3
3.2 22.0
20 -6.6
31.1 214.4
3.9 26.9
10 -12.2
30.5 210.3
4.5 31.0
0 -17.7
29.8 205.5
5.2 35.8
NOTE: The values in this table are for example only, they may vary due to differences is tire size,
atmospheric condition (pressure and humidity) and temperature.
Natural tire pressure loss over time:
• Vehicle tire pressure will naturally decrease about 3% to 5% per month, although
this may vary due to seasonal temperature change.
• After 6 to 8 months tire pressure may be low enough to cause a Tire Pressure
Monitor System (TPMS) to turn ON the Low Tire Pressure Warning Light (if
equipped).
This table is an example of approximate natural tire pressure decrease over time when
tire pressure is set to 35 psi (241.3 KPa).
Tie Pressure
Months PSI KPa
35.0 (set pressure) 241.3 (set Pressure)
1 month 34.0 – 33.3 234.4 - 229.6
2 months 32.9 – 32.3 226.8 – 222.7
3 months 31.9 – 31.3 219.9 – 215.8
4 months 31.0 – 30.1 213.7 – 207.5
5 months 30.1 – 29.4 207.5 – 202.7
6 months 29.2 – 28.6 201.3 – 197.2
7 months 27.7 – 26.7 191.0 – 184.1
8 months 27.4 – 26.9 188.9 – 185.5
NOTE: The values in this table are for example only, they may vary due to differences is tire size,
atmospheric condition (pressure and humidity) and temperature.
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Altitude:
• Tire pressure changes about 1.0 psi (6.9 KPa) for every 1,813 ft (553m) of altitude
change.
• If a vehicle is driven to a higher altitude after the tire pressure is set, the tire pressure
may become low enough to cause a Tire Pressure Monitor System (TPMS) to turn
ON the Low Tire Pressure Warning Light (if equipped).
This table is an example of approximate tire pressure change as altitude changes when
tire pressure is set to 35 psi (241.3 KPa)
Altitude Change Tire Pressure Tire Pressure
Change
Feet Meters PSI KPa PSI KPa
10,000 3,048 29.47 203.2 -5.53 -38.1
Altitude 7,500 2,286 30.86 212.8 -4.14 -28.5
Increase 5,000 1,524 32.24 222.3 -2.76 -19.0
3,000 914 33.34 229.9 -1.66 -11.4
2,000 610 33.89 233.7 -1.11 -7.6
1,500 457 34.17 235.6 -0.83 -5.7
1,000 305 34.45 237.5 -0.55 -3.8
500 152 34.72 239.4 -0.28 -1.9
35.00
(set pressure) 241.3
(set pressure) 0.0 0.0
500 152 35.28 243.2 +0.28 +1.9
1,000 305 35.55 245.1 +0.55 +3.8
Altitude 1,500 457 35.83 247.0 +0.83 +5.7
Decrease 2,000 610 36.11 249.0 +1.11 +7.7
3,000 914 36.66 252.8 +1.66 +11.5
5,000 1,524 37.76 260.3 +2.76 +19.0
7,500 2,286 39.14 269.9 +4.14 +28.6
10,000 3,048 40.53 279.4 +5.53 +38.1
NOTE: The values in this table are for example only, they may vary due to differences is tire size,
atmospheric condition (pressure and humidity) and temperature.
NOTE: For vehicles equipped with a Low Tire Pressure Warning Light, if the light
comes ON:
• Tire pressure must be adjusted/corrected (see example in the table below) before
the light will go OFF.
• After correcting the tire pressure, the vehicle may need to be driven at a speed of
more than 25 mph for several minutes before the light will go OFF.
Specified pressure Warning light comes ON Warning light goes OFF
35 psi (240KPa) Below 27.5 psi (189.6 KPa) Above 33.5 psi (231.0 KPa)
33 psi (230KPa) Below 26.5 psi (182.7 KPa) Above 32.0 psi (220.6 KPa)
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