Chevrolet Sonic Repair Manual: Tire Inflation Description
When you inflate the tires to the recommended inflation pressures, the factory-installed wheels and tires are designed in order to handle loads to the tire's rated load capacity. Incorrect tire pressures, or under-inflated tires, can cause the following conditions:
- Vehicle handling concerns
- Poor fuel economy
- Shortened tire life
- Tire overloading
Inspect the tire pressure when the following conditions apply:
- The vehicle has been sitting at least 3 hours.
- The vehicle has not been driven for more than 1.6 km (1 mi).
- The tires are cool.
Inspect the tires monthly or before any extended trip. Adjust the tire pressure to the specifications on the tire label. Install the valve caps or the extensions on the valves. The caps or the extensions keep out dust and water.
The kilopascal (kPa) is the metric term for pressure. The tire pressure may be printed in both kilopascal (kPa) and psi. One psi equals 6.9 kPa.
|
kPa |
psi |
kPa |
psi |
|---|---|---|---|
|
140 |
20 |
215 |
31 |
|
145 |
21 |
220 |
32 |
|
155 |
22 |
230 |
33 |
|
160 |
23 |
235 |
34 |
|
165 |
24 |
240 |
35 |
|
170 |
25 |
250 |
36 |
|
180 |
26 |
275 |
40 |
|
185 |
27 |
310 |
45 |
|
190 |
28 |
345 |
50 |
|
200 |
29 |
380 |
55 |
|
205 |
30 |
415 |
60 |
|
Conversion: 6.9 kPa = 1 psi |
|||
Tires with a higher than recommended pressure can cause the following conditions:
- A hard ride
- Tire bruising
- Rapid tread wear at the center of the tire
Tires with a lower than recommended pressure can cause the following conditions:
- A tire squeal on turns
- Hard steering
- Rapid wear and uneven wear on the edge of the tread
- Tire rim bruises and tire rim rupture
- Tire cord breakage
- High tire temperatures
- Reduced vehicle handling
- High fuel consumption
- Soft riding
Unequal pressure on the same axle can cause the following conditions:
- Uneven braking
- Steering lead
- Reduced vehicle handling
Refer to the Tire Placard for specific tire and wheel applications and tire pressures.
Tire Dismounting and Mounting (Match Mounting)
Match mounting is required on any wheel/tire assembly not within RFV specification.
Important: If a wheel/tire assembly is not within the RFV specification
after match mounting, the ti ...
Tire Inspection
We recommend that the tires, including the spare tire, if the vehicle has
one, be inspected for signs of wear or damage at least once a month.
Replace the tire if:
The indicators at three or ...
Other materials:
Rear Side Door Adjustment (4 Door Notch Back 69)
Rear Side Door Adjustment
Callout
Component Name
1
Rear Side Door
Caution: Refer to Fastener Caution.
Procedure
Loosen the rear door hinge bolt?€‰(Qty:?€‰4) to adjust the rear
door.
A ...
Center Pillar Reinforcement Replacement
Removal Procedure
Warning: Refer to Approved Equipment for Collision Repair
Warning.
Warning: Refer to Glass and Sheet Metal Handling Warning.
Note: The center pillar upper stiffener is made of Dual Phase
Steel and should be replaced only at ...
Adhesive Installation of Rear Windows
Warning: Refer to Glass and Sheet Metal Handling Warning.
Use a urethane adhesive systems which meet GM Specification GM?€‰3651G.
Remove all mounds or loose pieces of urethane adhesive from the pinchweld
area.
If the original window is being reused, remove all but approxi ...
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