Tire Inflation Pressures
The proper cold tire inflation pressure is listed on the driver's side B-Pillar or rear
edge of the driver's side door.
At least once a month:
• Check and adjust tire pressure with a good quality pocket-type pressure gauge. Do
not make a visual judgement when determining proper inflation. Tires may look
properly inflated even when they are under-inflated.
• Inspect tires for signs of tire wear or visible damage.
CAUTION!
After inspecting or adjusting the tire pressure, always reinstall the valve stem cap.
This will prevent moisture and dirt from entering the valve stem, which could
damage the valve stem.
Inflation pressures specified on the placard are always “cold tire inflation pressure”.
Cold tire inflation pressure is defined as the tire pressure after the vehicle has not
been driven for at least three hours, or driven less than 1 mile (1.6 km) after sitting
for a minimum of three hours. The cold tire inflation pressure must not exceed the
maximum inflation pressure molded into the tire sidewall.
Check tire pressures more often if subject to a wide range of outdoor temperatures,
as tire pressures vary with temperature changes.
Tire pressures change by approximately 1 psi (7 kPa) per 12°F (7°C) of air
temperature change. Keep this in mind when checking tire pressure inside a garage,
especially in the Winter.
Example: If garage temperature = 68°F (20°C) and the outside temperature = 32°F
(0°C) then the cold tire inflation pressure should be increased by 3 psi (21 kPa),
which equals 1 psi (7 kPa) for every 12°F (7°C) for this outside temperature
condition.
Tire pressure may increase from 2 to 6 psi (13 to 40 kPa) during operation. DO NOT
reduce this normal pressure build up or your tire pressure will be too low.
M A I N T A I N I N G Y O U R V E H I C L E
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Summary of Contents for CHASSIS CAB 3500 2017
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