2007 CADILLAC STS tire size

If a Tire Goes Flat
It is unusual for a tire to blowout while you are
driving, especially if you maintain your tires
properly. SeeTires on page 421. If air goes out of
a tire, It is much more likely to leak out slowly.
But if you should ever have a blowout, here are a
few tips about what to expect and what to do:
If a front tire fails, the at tire will create a drag that
pulls the vehicle toward that side. Take your
foot off the accelerator pedal and grip the steering
wheel rmly. Steer to maintain lane position,
and then gently brake to a stop well out of the
traffic lane.
A rear blowout, particularly on a curve, acts much
like a skid and may require the same correction
you would use in a skid. In any rear blowout,
remove your foot from the accelerator pedal. Get
the vehicle under control by steering the way
you want the vehicle to go. It may be very bumpy
and noisy, but you can still steer. Gently brake
to a stop, well off the road if possible.If a tire goes at, and your vehicle has a compact
spare tire, seeChanging a Flat Tire on page 464.
This information shows you how to use your
vehicle’s tire changing equipment and how
to change a at tire safely.
{CAUTION:
Lifting a vehicle and getting under it to do
maintenance or repairs is dangerous
without the appropriate safety equipment
and training. The jack provided with your
vehicle is designed only for changing a
at tire. If it is used for anything else, you
or others could be badly injured or killed
if the vehicle slips off the jack. Use the
jack provided with your vehicle only for
changing a at tire.
If your vehicle has 255/45ZR18 size tires, there is
no spare tire, jack, or tire changing equipment.
A tire inator kit, included with your vehicle, may
be used to seal small punctures in the tread
area of the tire. SeeTire Inator Kit on page 452.
451

Storing a Flat or Spare Tire
and Tools
{CAUTION:
Storing a jack, a tire, or other equipment
in the passenger compartment of the
vehicle could cause injury. In a sudden
stop or collision, loose equipment could
strike someone. Store all these in the
proper place.
Full-Size Tire and Tools
After you have put the compact spare tire on your
vehicle, you will need to do the following to
store the at tire in your trunk.
1. Open the trunk. SeeTrunk on page 101.
2. Store the jack and wheel wrench in the jack
container in the trunk.
When storing the jack, in the container, it
must be raised until the screw end is ush with
the edge of the jack.
3. Store the at tire as far forward in the trunk as
possible.
The compact spare is for temporary use only.
Replace the compact spare tire with a full-size tire
as soon as you can.
473

Compact Spare Tire
Although the compact spare tire was fully inated
when the vehicle was new, it can lose air after
a time. Check the ination pressure regularly. It
should be 60 psi (420 kPa).
After installing the compact spare on the vehicle,
you should stop as soon as possible and make
sure the spare tire is correctly inated. The
compact spare is made to perform well at speeds
up to 65 mph (105 km/h) for distances up to
3,000 miles (5 000 km), so you can nish your trip
and have the full-size tire repaired or replaced
where you want. You must calibrate the tire
ination monitor system after installing or removing
the compact spare. SeeTire Pressure Monitor
System on page 433. The system may not
work correctly when the compact spare is installed
on the vehicle. Of course, it’s best to replace
the spare with a full-size tire as soon as you can.
The spare will last longer and be in good shape
in case you need it again.Notice:When the compact spare is installed,
do not take your vehicle through an automatic
car wash with guide rails. The compact
spare can get caught on the rails. That can
damage the tire and wheel, and maybe
other parts of your vehicle.
Do not use the compact spare on other vehicles.
And do not mix the compact spare tire or
wheel with other wheels or tires. They will not t.
Keep the spare tire and its wheel together.
Notice:Tire chains will not t your compact
spare. Using them can damage your vehicle
and can damage the chains too. Do not use tire
chains on your compact spare.
475

At Each Fuel Fill
It is important to perform these underhood checks
at each fuel ll.
Engine Oil Level Check
Check the engine oil level and add the proper oil
if necessary. SeeEngine Oil on page 380for
further details.
Notice:It is important to check the engine oil
regularly and keep it at the proper level.
Failure to keep the engine oil at the proper
level can cause damage to the engine not
covered by your warranty.
Engine Coolant Level Check
Check the engine coolant level and add
DEX-COOL®coolant mixture if necessary. See
Engine Coolant on page 389for further details.
Intercooler Coolant Level Check
(4.4L Supercharged Engine)
Check the coolant level and add DEX-COOL®
coolant mixture if necessary. SeeEngine Coolant
on page 389for further details.
Windshield Washer Fluid Level Check
Check the windshield washer uid level in
the windshield washer uid reservoir and add the
proper uid if necessary.
At Least Once a Month
Tire Ination Check
Visually inspect your vehicle’s tires and make sure
they are inated to the correct pressures. Do not
forget to check the spare tire. SeeInation - Tire
Pressure on page 431. Check to make sure the
spare tire is stored securely. SeeChanging a Flat
Tire on page 464.
Tire Wear Inspection
Tire rotation is recommended if your vehicle has
the same size tires at all four wheel positions
and may be required for high mileage highway
drivers prior to the Engine Oil Life System service
notication. Check the tires for wear and, if
necessary, rotate the tires. SeeTire Inspection
and Rotation on page 438.
513

Theft-Deterrent Systems.............................. 107
Time, Setting............................................... 281
Tires........................................................... 421
Aluminum or Chrome-Plated Wheels,
Cleaning............................................... 482
Buying New Tires..................................... 441
Chains..................................................... 447
Changing a Flat Tire................................ 464
Cleaning.................................................. 483
Compact Spare Tire................................. 475
Different Size........................................... 443
High-Speed Operation.............................. 432
If a Tire Goes Flat................................... 451
Ination - Tire Pressure............................ 431
Inspection and Rotation............................ 438
Installing the Spare Tire........................... 466
Lifting Your Vehicle.................................. 448
Pressure Monitor System......................... 433
Removing the Flat Tire............................. 466
Removing the Spare Tire and Tools......... 465
Run-Flat................................................... 429
Storing a Flat or Spare Tire and Tools..... 473
Tire Inator Kit......................................... 452
Tire Sidewall Labeling.............................. 423Tires (cont.)
Tire Terminology and Denitions............... 426
Uniform Tire Quality Grading.................... 444
Wheel Alignment and Tire Balance........... 445
Wheel Replacement................................. 445
When It Is Time for New Tires................. 440
Winter Tires............................................. 422
Towing
Recreational Vehicle................................. 355
Towing a Trailer....................................... 357
Your Vehicle............................................. 355
Traction
Control System (TCS).............................. 323
Control System Warning Light.................. 250
Limited-Slip Rear Axle.............................. 325
Magnetic Ride Control.............................. 325
StabiliTrak
®System................................. 326
Transmission
Fluid, Automatic....................................... 388
Transmission Operation, Automatic.............. 116
Trunk.......................................................... 101
Turn and Lane-Change Signals................... 182
Turn Signal/Multifunction Lever.................... 182
Twilight Sentinel
®........................................ 218
558

U
Ultrasonic Rear Parking Assist (URPA)........ 226
Understanding Radio Reception................... 312
Uniform Tire Quality Grading....................... 444
Universal Home Remote System........135, 136
Operation........................................137, 142
V
Valet Lockout Switch................................... 110
Vehicle
Control..................................................... 320
Damage Warnings....................................... 5
Loading.................................................... 349
Symbols...................................................... 5
Vehicle Data Collection and Event
Data Recorders........................................ 536
Vehicle Identication
Number (VIN).......................................... 485
Service Parts Identication Label.............. 485Vehicle Personalization................................ 148
Memory Seat, Mirrors and
Steering Wheel..................................... 169
Ventilated Seats............................................ 11
Ventilation Adjustment.................................. 237
Visors.......................................................... 107
W
Warning Lights, Gages and Indicators......... 241
Warnings
DIC Warnings and Messages................... 264
Hazard Warning Flashers......................... 180
Other Warning Devices............................ 180
Safety and Symbols..................................... 4
Vehicle Damage.......................................... 5
Wheels
Alignment and Tire Balance..................... 445
Different Size........................................... 443
Replacement............................................ 445
Where to Put the Restraint............................ 48
559