load capacity CADILLAC CTS 2005 1.G User Guide

If your tires have too much air (over-ination), you
can get the following:
Unusual wear
Poor handling
Rough ride
Needless damage from road hazards
A Tire and Loading Information label is attached to the
vehicle’s center pillar, below the driver’s door latch. This
label lists your vehicle’s original equipment tires and
shows the correct ination pressures for your tires when
they are cold. The recommended cold tire ination
pressure, shown on the label, is the minimum amount of
air pressure needed to support your vehicle’s maximum
load carrying capacity.
For additional information regarding how much weight
your vehicle can carry, and an example of the tire
and loading information label, seeLoading Your Vehicle
on page 4-33. How you load your vehicle affects
vehicle handling and ride comfort, never load your
vehicle with more weight than it was designed to carry.
When to Check
Check your tires once a month or more. Do not forget to
check the compact spare tire, if your vehicle has one.
The compact spare should be at 60 psi (420 kPa).
For additional information regarding the compact spare
tire, seeCompact Spare Tire (CTS) on page 5-85.
How to Check
Use a good quality pocket-type gage to check tire
pressure. You can’t tell if your tires are properly inated
simply by looking at them. Radial tires may look properly
inated even when they’re underinated. Check the tire’s
ination pressure when the tires are cold. Cold means
your vehicle has been sitting for at least three hours or
driven no more than 1 mile (1.6 km).
Remove the valve cap from the tire valve stem. Press
the tire gage rmly onto the valve to get a pressure
measurement. If the cold tire ination pressure matches
the recommended pressure on the Tire and Loading
Information label, no further adjustment is necessary.
If the ination pressure is low, add air until you reach the
recommended amount.
If you overll the tire, release air by pushing on the
metal stem in the center of the tire valve. Re-check the
tire pressure with the tire gage.
Be sure to put the valve caps back on the valve stems.
They help prevent leaks by keeping out dirt and moisture.
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High Speed Operation (CTS-V)
{CAUTION:
Driving at high speeds, 100 mph (160 km/h)
or higher, puts an additional strain on tires.
Sustained high-speed driving causes excessive
heat build up and can cause sudden tire failure.
You could have a crash and you or others
could be killed. Some high-speed rated tires
require ination pressure adjustment for high
speed operation. When speed limits and road
conditions are such that a vehicle can be driven
at high speeds, make sure the tires are rated
for high speed operation, in excellent condition,
and set to the correct cold tire ination pressure
for the vehicle load.
The CTS-V performance series has 245/45R18 96W size
tires. These high-performance tires require ination
pressure adjustment when driving your vehicle at speeds
of 130 mph (209 km/h) or higher with occupants and
cargo weighing 600 lbs. (272 kg) up to 882 lbs. (400 kg).Use the following chart to determine the cold tire
ination pressure when operating your vehicle under
these conditions.
Tire Size: 245/45R18 96W Recommended Cold
Tire Ination Pressure for High Speed Operation
at 130 mph (209 km/h) or more:
Occupant and
Cargo Weight:
Less than
600 lbs (272 kg)Occupant and
Cargo Weight:
600 lbs (272 kg)
Up to 882 lbs (400 kg)
(Vehicle Capacity
Weight)
Front
TiresRear
TiresFront
TiresRear
Tires
30 psi
(210 kPa)30 psi
(210 kPa)32 psi
(220 kPa)34 psi
(235 kPa)
When you end high-speed driving, return the tires
to the cold ination pressures shown on the tire and
loading information label. SeeLoading Your Vehicle
on page 4-33.
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Wheel Alignment and Tire Balance
The tires and wheels on your vehicle were aligned and
balanced carefully at the factory to give you the longest
tire life and best overall performance. Adjustments to
wheel alignment and tire balancing will not be necessary
on a regular basis. However, if you notice unusual tire
wear or your vehicle pulling to one side or the other, the
alignment may need to be checked. If you notice your
vehicle vibrating when driving on a smooth road, your
tires and wheels may need to be rebalanced. See your
dealer for proper diagnosis.
Wheel Replacement
Replace any wheel that is bent, cracked or badly rusted
or corroded. If wheel nuts keep coming loose, the
wheel, wheel bolts and wheel nuts should be replaced.
If the wheel leaks air, replace it (except some
aluminum wheels, which can sometimes be repaired).
See your dealer if any of these conditions exist.
Your dealer will know the kind of wheel you need.
Each new wheel should have the same load-carrying
capacity, diameter, width, offset and be mounted
the same way as the one it replaces.
If you need to replace any of your wheels, wheel
bolts or wheel nuts, replace them only with new GM
original equipment parts. This way, you will be sure
to have the right wheel, wheel bolts and wheel nuts
for your vehicle.
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