Matrix L4-1.8L (1ZZ-FE) (2008)
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Subtract the expected lowest temperature (14°F) from the workshop temperature (68°F) = 54°F.
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Using the Tire Pressure Chart (Figure 1), find the intersection of the warm 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 6.7 psi.
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The tires should be filled to:
31.9 + 6.7 psi = 38.6 psi
Example 3: Temperature Compensation - "Hot" Tires
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The vehicle has been driven to the shop on the highway for at least 60 minutes (vehicle has "hot" tires) and tire pressures are set to 31.9 psi.
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Workshop temperature is 68°F, and the expected lowest ambient temperature in the area is expected to be 14°F.
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Subtract the expected lowest temperature (14°F) from the workshop temperature (68°F) = 54°F.
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Using the tire pressure chart (Figure 1), find the intersection of the hot 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 9.0 psi.
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The tires should be filled to:
31.9 + 9.0 psi = 40.9 psi