User Manual - Page 446

For RAM 2020 3500.

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444 SERVICING AND MAINTENANCE
Dual Rear Wheels — If Equipped
The tires used on dual wheel assemblies should
be matched for wear to prevent overloading one
tire in a set. To check if tires are even, lay a
straight edge across all four tires. The straight
edge should touch all the tires.
Tire Rotation
NOTE:
If your vehicle is equipped with a Tire Pressure
Information System (TPIS):
The Tire Pressure Information System (TPIS)
uses unique sensors in the inner rear wheels
to help identify them from the outer rear
wheels, because of this, the inner and outer
wheel locations can’t be switched.
After a tire rotation is completed, as shown
below, the system can auto learn the locations
of each sensor ID. Auto learning/localization
occurs when the vehicle ignition status is
changed from Off to On and speeds of greater
than 5 mph (8km/h) are obtained and remain
over 5 mph (8km/h) for at about a 15 minute
period. You may need to drive for 20 minutes
to account slower speeds and stops.
If the tires are rotated incorrectly, The auto
localization of the TPIS sensors will fail to
locate correctly resulting in incorrect loca-
tions for the pressure values displayed in the
instrument cluster.
CAUTION!
3500 Dual Rear Tires may only have one
approved direction of rotation. This is to
accommodate the asymmetrical design
(tread pattern) of the On/Off-Road tire and
the use of Outline White Letter (OWL) tires.
When replacing a flat, the spare tire may
have to be remounted on the rim, or
installed at a different location, to maintain
the correct placement of the tire on the
wheel relative to the tire/wheel position on
the truck. For example, if the spare is used
to replace an outer rear tire it will have to be
remounted on the rim so that the wheel is
dished inward. That way the tread design of
asymmetrical tires and the white writing of
the OWL tires will maintain proper position.
20_DJD2_OM_EN_USC_t.book Page 444
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