xD L4-1.8L (2ZR-FE) (2008)
Tire Pressure Adjustment
Recommended Tire Pressure Adjustment:
NOTE
Use a high quality accurate tire pressure gauge, and check its accuracy regularly.
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Consider the difference of the air temperature in the workshop and the lowest ambient temperature that may be expected in the next few weeks
(especially in winter).
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Use the chart (Figure 1) to compensate for temperature of the tires when adjusting tire pressure.
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Use temperature compensation Example 1 for the spare tire.
Example 1: Temperature Compensation - "Cold" Tires
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The vehicle has been parked overnight outside shop (vehicle has "cold" tires) and tire pressures are set to 31.9 psi.
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Workshop temperature is 68° F, and expected lowest ambient temperature in the local area is to be 14° F.
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Subtract the expected lowest temperature (14° F) from the highest expected temperature (68° F) = 54° F.
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Using the tire pressure chart (Figure 1), find the intersection of the cold tire line at the point corresponding to 54° F, and read off the value on the tire
pressure change axis. In this case it would be about 4.9 psi.
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The tires should be filled to:
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31.9 + 4.9 psi = 36.8 psi
Example 2: Temperature Compensation - "Warm" Tires
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The vehicle has been driven to the shop on surface streets for about 30 minutes (vehicle has "warm" tires) and tire pressures are set to 31.9 psi.