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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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