1996 Pontiac Bonneville Owner's Manual - Page 291

1996 Pontiac Bonneville Manual

Page 291 highlights

While the tires available General Motors passenger on cars and light 'trucks may vary with respect to these grades, they must also conform to Federal safety requirements and additional General Motors Tire Perforrnance Criteria (TPC) standards. . Warning: The traction grade assigned to this is based tire on braking (straightahead) traction tests does not and include cornering (turning) traction. Temperature A, B, C I - Treadwear The treadwear gradeis a comparative rating based on the wear rate of the tire when tested under controlled conditions ona specified government test course. -For example, a tire graded would wear one and a half 150 (1 1/2) times as well on the government course as a tire graded 100. The relative performance tires depends of upon the actual conditions their use, however, and of may depart significantly from the norm due variations to in driving habits, service practices and differences in road characteristics and climate. Traction A, B, C The traction grades, from highest to lowest, areB, A, and C, and they represent thetire's ability to stop on wet pavement as measured under controlid conditions on specified government test surfaces of asphalt and concrete. .,. A tire'marked C may have poor traction performance. The temperature grades are (the highest),B, and C , A representing the tire's resistance to ,the generation of heat and its ability to dissipate heat when tested under controlled conditions on specified indoor laboratory a test wheel. Sustained high temperature can cause the material of the tire to degenerate and reduce tire life, andaxcessive temperature can lead to sudden tire - ..? .~. I . .-I failure. The grade corresponds to a level of C performance which all passenger car tires must meet under the Federal Motor Vehicle Safety Standard No. 109. Grades B and A represent higher levels of performance on the laboratory testwheel than the minimum required by law. Warning: The temperature grade for this tire is established €or a tire that is properly inflated not and overloaded.Excessivespeed,underinflation,or excessive loading, either separately in combination, or can cause heat buildup possible tire failure. and . ' ..., . 1 . I -. .. .- ..., , . ::; ,? - , r - '.: .r. .-. ..';;Y, i ... '.. .. ~ v ;,, , *. -.; :-,- =.: .%$ ;., =,,,-, YY 1. . 6-46

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
  • 99
  • 100
  • 101
  • 102
  • 103
  • 104
  • 105
  • 106
  • 107
  • 108
  • 109
  • 110
  • 111
  • 112
  • 113
  • 114
  • 115
  • 116
  • 117
  • 118
  • 119
  • 120
  • 121
  • 122
  • 123
  • 124
  • 125
  • 126
  • 127
  • 128
  • 129
  • 130
  • 131
  • 132
  • 133
  • 134
  • 135
  • 136
  • 137
  • 138
  • 139
  • 140
  • 141
  • 142
  • 143
  • 144
  • 145
  • 146
  • 147
  • 148
  • 149
  • 150
  • 151
  • 152
  • 153
  • 154
  • 155
  • 156
  • 157
  • 158
  • 159
  • 160
  • 161
  • 162
  • 163
  • 164
  • 165
  • 166
  • 167
  • 168
  • 169
  • 170
  • 171
  • 172
  • 173
  • 174
  • 175
  • 176
  • 177
  • 178
  • 179
  • 180
  • 181
  • 182
  • 183
  • 184
  • 185
  • 186
  • 187
  • 188
  • 189
  • 190
  • 191
  • 192
  • 193
  • 194
  • 195
  • 196
  • 197
  • 198
  • 199
  • 200
  • 201
  • 202
  • 203
  • 204
  • 205
  • 206
  • 207
  • 208
  • 209
  • 210
  • 211
  • 212
  • 213
  • 214
  • 215
  • 216
  • 217
  • 218
  • 219
  • 220
  • 221
  • 222
  • 223
  • 224
  • 225
  • 226
  • 227
  • 228
  • 229
  • 230
  • 231
  • 232
  • 233
  • 234
  • 235
  • 236
  • 237
  • 238
  • 239
  • 240
  • 241
  • 242
  • 243
  • 244
  • 245
  • 246
  • 247
  • 248
  • 249
  • 250
  • 251
  • 252
  • 253
  • 254
  • 255
  • 256
  • 257
  • 258
  • 259
  • 260
  • 261
  • 262
  • 263
  • 264
  • 265
  • 266
  • 267
  • 268
  • 269
  • 270
  • 271
  • 272
  • 273
  • 274
  • 275
  • 276
  • 277
  • 278
  • 279
  • 280
  • 281
  • 282
  • 283
  • 284
  • 285
  • 286
  • 287
  • 288
  • 289
  • 290
  • 291
  • 292
  • 293
  • 294
  • 295
  • 296
  • 297
  • 298
  • 299
  • 300
  • 301
  • 302
  • 303
  • 304
  • 305
  • 306
  • 307
  • 308
  • 309
  • 310
  • 311
  • 312
  • 313
  • 314
  • 315
  • 316
  • 317
  • 318
  • 319
  • 320
  • 321
  • 322
  • 323
  • 324
  • 325
  • 326
  • 327
  • 328
  • 329
  • 330
  • 331
  • 332
  • 333
  • 334
  • 335
  • 336
  • 337
  • 338
  • 339
  • 340
  • 341
  • 342
  • 343
  • 344
  • 345
  • 346
  • 347
  • 348
  • 349
  • 350
  • 351
  • 352
  • 353
  • 354
  • 355
  • 356
  • 357
  • 358
  • 359
  • 360
  • 361
  • 362
  • 363
  • 364
  • 365
  • 366
  • 367
  • 368
  • 369
  • 370
  • 371
  • 372
  • 373
  • 374
  • 375
  • 376
  • 377
  • 378
  • 379
  • 380
  • 381
  • 382
  • 383
  • 384
  • 385
  • 386
  • 387

While
the
tires
available
on
General
Motors
passenger
.
cars and light
'trucks may
vary
with
respect
to
these
grades,
they
must
also
conform
to
Federal
safety
requirements
and
additional
General
Motors
Tire
Perforrnance
Criteria
(TPC)
standards.
Treadwear
The treadwear
grade
is a comparative
rating
based
on
the
wear rate of the
tire
when
tested
under
controlled
conditions
on a specified
government
test
course.
-For
example,
a
tire
graded
150
would
wear one and a half
(1
1/2)
times
as
well
on
the
government
course
as
a
tire
graded
100.
The
relative
performance
of
tires
depends
upon
the
actual
conditions
of
their
use,
however,
and
may
depart
significantly
from
the
norm
due
to variations
in
driving
habits,
service
practices
and
differences
in
road
characteristics
and
climate.
Traction
-
A,
B,
C
The
traction
grades,
from
highest
to
lowest,
are
A,
B,
and
C,
and
they
represent
the
tire's
ability
to
stop
on
wet
pavement
as
measured
under controlid conditions
on
..?
specified
government
test
surfaces
of
asphalt
and
concrete.
-
A
tire'marked
C
may
have
poor
traction
performance.
I
.~.
.-I
-
.
I
.
.
I
.,.
. .
-
- .
, .
.
.
..
,
.
.
1
.
.
,
;:-;.,;:,>
::;
,?
..';;Y,
i
...
.
.
~
~.:.:..-*,,~'.v
;,,
-
.%$
- , r -
'.:
' .
.
,
-.;
=,,,-,
.-.
*.
:-,-
=.:
;
.,
Y1
.Y
.
.r.
Warning:
The
traction
grade
assigned
to
this
tire
is based
on
braking
(straightahead)
traction
tests
and
does
not
include
cornering
(turning)
traction.
Temperature
-
A,
B,
C
The
temperature
grades
are
A
(the
highest),
B,
and
C,
representing
the
tire's
resistance
to
,the
generation
of
heat
and
its
ability
to
dissipate
heat
when
tested
under
controlled
conditions
on
a
specified
indoor
laboratory
test
wheel.
Sustained
high
temperature
can
cause
the
material
of
the
tire
to
degenerate
and
reduce
tire
life,
andaxcessive
temperature
can
lead
to
sudden
tire
failure.
The
grade
C
corresponds
to
a level of
performance
which
all
passenger
car
tires
must
meet
under
the
Federal
Motor
Vehicle
Safety
Standard
No.
109.
Grades
B
and
A
represent
higher
levels
of
performance
on
the
laboratory
test
wheel
than
the
minimum
required
by
law.
Warning:
The
temperature
grade
for
this
tire
is
established €or a tire
that
is
properly
inflated
and
not
overloaded. Excessive speed, underinflation, or
.
'
excessive
loading,
either
separately
or
in
combination,
can
cause
heat
buildup
and possible
tire
failure.
6-46