2019 RAM CHASSIS CAB height

342 STARTING AND OPERATING
With Weight-Distributing Hitch (Correct) Improper Adjustment Of Weight-Distributing Hitch
(Incorrect)
Recommended Distribution Hitch Adjustment
1. Position the truck to be ready to connect to the trailer (do
not connect the trailer).
2. Measure the height of the top of the front wheel opening
on the fender to ground, this is height H1.

STARTING AND OPERATING 343
Measuring Height (H)
3. Attach the trailer to the vehicle without the weight distri -
bution bars connected.
4. Measure the height of the top of the front wheel opening
on the fender to ground, this is height H2.
5. Install and adjust the tension in the weight distributing
bars per the manufacturers’ recommendations so that the
height of the front fender is approximately (H2-H1)/
2+H1 (about 1/2 the difference between H2 and H1 above
normal ride height [H1]). 6. Preform a visual inspection of the trailer and weight
distributing hitch to confirm manufacturers’ recommen -
dations have been met.
NOTE:
For all towing conditions, we recommend towing with tow
haul mode engaged.
Fifth-Wheel Hitch
The fifth-wheel hitch is a special high platform with a
coupling that mounts over the rear axle of the tow vehicle in
the truck bed. It connects a vehicle and fifth-wheel trailer
with a coupling king pin.
Your truck may be equipped with a 5th wheel hitch option.
Refer to the separately provided 5th wheel hitch safety, care,
assembly, and operating instructions. Measurement Example Example 2500/3500 Height
(mm)
H1 1030
H2 1058
H2-H1 28
(H2-H1)/2 14
(H2-H1)/2 + H1 1044
5

446 SERVICING AND MAINTENANCE
Tire Sizing Chart
EXAMPLE:
Example Size Designation: P215/65R15XL 95H, 215/65R15 96H, LT235/85R16C, T145/80D18 103M, 31x10.5 R15 LT
P = Passenger car tire size based on U.S. design standards, or
"....blank...." = Passenger car tire based on European design standards, or
LT = Light truck tire based on U.S. design standards, or
T or S = Temporary spare tire or
31 = Overall diameter in inches (in)
215, 235, 145 = Section width in millimeters (mm)
65, 85, 80 = Aspect ratio in percent (%)
• Ratio of section height to section width of tire, or
10.5 = Section width in inches (in)
R = Construction code
• "R" means radial construction, or
• "D" means diagonal or bias construction
15, 16, 18 = Rim diameter in inches (in)
Service Description:
95 = Load Index
• A numerical code associated with the maximum load a tire can carry

MULTIMEDIA 501
Suspension — If Equipped
After pressing the “Suspension” button on the touchscreen, the following settings will be available:
Setting Name Selectable Options
Auto Entry/Exit Suspension On Off
NOTE:
When the “Auto Entry/Exit Suspension” feature is selected, the vehicle automatically lowers from ride height position when
vehicle shifted to park for easy entry/exit.
Display Suspension Messages All Warning Only
Tire Jack Mode On Off
NOTE:
When this feature is selected the air suspension system is disabled to prevent auto leveling of the suspension, while the
vehicle is on a jack changing a tire.
Transport Mode On Off
NOTE:
When the “Transport Mode” feature is selected, the air suspension system is disabled to assist with flat bed towing.
Wheel Alignment Mode On Off
NOTE:
The “Wheel Alignment Mode” feature prevents auto leveling of the air suspension while performing a wheel alignment
service. Before performing a wheel alignment, this mode must be enabled. Refer to an authorized dealer for further informa -
tion. 9