Tire Chain Usage Description; P-Metric Sized Tires Description - GMC chervolet camaro 1999 Service Manual

3-72 Tires and Wheels
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
140
145
155
160
165
170
180
185
190
200
205
Inflation Pressure Conversion
(Kilopascals to PSI)
psi
kPa
20 215
21 220
22 230
23 235
24 240
25 250
26 275
27 310
28
345
29 380
30 415
Conversion: 6.9 kPa
=
1 psi
psi
31
32
33
34
35
36
40
45
50
55
60
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
See the Tire Placard for specific tire and wheel
applications and tire pressures.
Tire Chain Usage Description
Notice: Tire chains should not be used with
P245/50ZR16 or P235/55R16 tires. The chains could
damage the vehicle. Tire chains are only
recommended for emergency use or when required
bylaw.
Suspension
P-Metric Sized Tires Description
p 245
I
50 R 16 95S
TIRE TYPE
P-PASSENGER
T - TEMPORARY
SECTION
WIDTH
(MILLIMETERS)
235
245
275
ASPECT
RATIO
(SECTION HEIGHT)
{SECTION WIDTH)
55
50
40
I
SPEED SYMBOL
RIM
DIAMETER
(INCHES)
16
17
CONSTRUCTION
TYPE
R-RADIAL
B-BIAS-BELTED
0-DIAGONAL (BIAS)
SECTION
-i,,-----+---.....i
WIDTH
70078
All GM vehicles now use passenger-metric (P-metric)
sized tires. P-metric tires are available in the
following two load ranges:
• Standard load with 210 kPa (30 psi) maximum
pressure
• Extra load with 240 pKa (35 psi) maximum
pressure
Most P-metric tire sizes do not have exact
corresponding alpha-numeric tire sizes. For example,
a P205!75R15 is not exactly equal in size and
load carrying capacity to an FR78-15. Replacement
tires should be of the same TPC specification number
as those originally on the vehicle. If the TPC
specification number is the same then the following
conditions are the same:
• The size
• The load range
• The construction
If you must replace the P-metric tires with other sizes,
consult a tire dealer. A tire company can best
recommend the closest match of alpha-numeric to
P-metric sizes within their own tire lines.
The metric term for tire pressure is the kilopascal
(kPa). Tire pressure may be printed in both kPa and
pounds per square inch (psi). One psi equals 6.9 kPa.
Refer to the tire placard or Specifications for tire
pressures.
(
\
(