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  • TIRE SCHOOL
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    Home >> Tire School >>  LI, SI & LR

    LI, SI & LR

    Load Index
    Tires are specified by the manufacturer with a maximum load rating. Loads exceeding the rating can result in unsafe conditions that can lead to steering instability and even rupture. The load index refers to the load-carrying capacity of a tire, or how much weight a tire can support. For example, if a tire has a load index of 89, it can support 1,279 pounds (from below chart) at maximum air pressure.

    LI

    KG

    LI

    KG

    LI

    KG

    LI

    KG

    LI

    KG

    LI

    KG

    LI

    KG

    0

    45

    40

    140

    80

    450

    120

    1400

    160

    4500

    200

    14000

    240

    45000

    1

    46.2

    41

    145

    81

    462

    121

    1450

    161

    4625

    201

    14500

    241

    46250

    2

    47.5

    42

    150

    82

    475

    122

    1500

    162

    4750

    202

    15000

    242

    47500

    3

    48.7

    43

    155

    83

    487

    123

    1550

    163

    4875

    203

    16000

    243

    48750

    4

    50

    44

    160

    84

    500

    124

    1600

    164

    5000

    204

    16000

    244

    50000

    5

    51.5

    45

    165

    85

    515

    125

    1650

    165

    5150

    205

    16500

    245

    51500

    6

    53

    46

    170

    86

    530

    126

    1700

    166

    5300

    206

    17000

    246

    53000

    7

    54.5

    47

    175

    87

    545

    127

    1750

    167

    5450

    207

    17500

    247

    54500

    8

    56

    48

    180

    88

    560

    128

    1800

    168

    5600

    208

    18000

    248

    56000

    9

    58

    49

    185

    89

    580

    129

    1850

    169

    5800

    209

    18500

    249

    58000

    10

    60

    50

    190

    90

    600

    130

    1900

    170

    6000

    210

    19000

    250

    60000

    11

    61.5

    51

    195

    91

    615

    131

    1950

    171

    6150

    211

    19500

    251

    61500

    12

    63

    52

    200

    92

    630

    132

    2000

    172

    6300

    212

    20000

    252

    63000

    13

    65

    53

    206

    93

    650

    133

    2060

    173

    6500

    213

    20600

    253

    65000

    14

    67

    54

    212

    94

    670

    134

    2120

    174

    6700

    214

    21200

    254

    67000

    15

    69

    55

    218

    95

    690

    135

    2180

    175

    6900

    215

    21800

    255

    69000

    16

    71

    56

    224

    96

    710

    136

    2240

    176

    7100

    216

    22400

    256

    71000

    17

    73

    57

    230

    97

    730

    137

    2300

    177

    7300

    217

    23000

    257

    73000

    18

    75

    58

    236

    98

    750

    138

    2360

    178

    7500

    218

    23600

    258

    75000

    19

    77.5

    59

    243

    99

    775

    139

    2430

    179

    7750

    219

    24300

    259

    77500

    20

    80

    60

    250

    100

    800

    140

    2500

    180

    8000

    220

    25000

    260

    80000

    21

    82.5

    61

    257

    101

    825

    141

    2575

    181

    8250

    221

    25750

    261

    82500

    22

    85

    62

    265

    102

    850

    142

    2650

    182

    8500

    222

    26500

    262

    85000

    23

    87.5

    63

    272

    103

    875

    143

    2725

    183

    8750

    223

    27250

    263

    87500

    24

    90

    64

    280

    104

    900

    144

    2800

    184

    9000

    224

    28000

    264

    90000

    25

    92.5

    65

    290

    105

    925

    145

    2900

    185

    9250

    225

    29000

    265

    92500

    26

    95

    66

    300

    106

    950

    146

    3000

    186

    9500

    226

    30000

    266

    95000

    27

    97.5

    67

    307

    107

    975

    147

    3075

    187

    9750

    227

    30750

    267

    97500

    28

    100

    68

    315

    108

    1000

    148

    3150

    188

    10000

    228

    31500

    268

    100000

    29

    103

    69

    325

    109

    1030

    149

    3250

    189

    10300

    229

    32500

    269

    103000

    30

    106

    70

    335

    110

    1060

    150

    3350

    190

    10600

    230

    33500

    270

    106000

    31

    109

    71

    345

    111

    1090

    151

    3450

    191

    10900

    231

    34500

    271

    109000

    32

    112

    72

    355

    112

    1120

    152

    3550

    192

    11200

    232

    35500

    272

    112000

    33

    115

    73

    365

    113

    1150

    153

    3650

    193

    11500

    233

    36500

    273

    115000

    34

    118

    74

    375

    114

    1180

    154

    3750

    194

    11800

    234

    37500

    274

    118000

    35

    121

    75

    387

    115

    1215

    155

    3875

    195

    12150

    235

    38750

    275

    121500

    36

    125

    76

    400

    116

    1250

    156

    4000

    196

    12500

    236

    40000

    276

    125000

    37

    128

    77

    412

    117

    1285

    157

    4125

    197

    12850

    237

    41250

    277

    128500

    38

    132

    78

    425

    118

    1320

    158

    4250

    198

    13200

    238

    42500

    278

    132000

    39

    136

    79

    437

    119

    1360

    159

    4375

    199

    13600

    239

    43750

    279

    136000


    Speed symbol

    speed symol show the maximum speed the tire can run at.


    Symbol Speed Speed (km/h) Speed (mph)
    A1 5 3
    A2 10 6
    A3 15 9
    A4 20 12
    A5 25 16
    A6 30 19
    A8 40 25
    B 50 31
    C 60 37
    D 65 40
    E 70 43
    F 80 50
    G 90 56
    J 100 62
    K 110 68
    L 120 75
    M 130 81
    N 140 87
    P 150 94
    Q 160 100
    R 170 106
    S 180 112
    T 190 118
    U 200 124
    H 210 130
    V 240 149
    W 270 168
    Y 300 186

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