U.S. General 2575, Assembly And Operation Instructions Manual

SKU 02575 

For technical questions, please call 1-800-444-3353.

Page 14

Tire Markings

Load index and 

speed rating*

European tire 

certificate*

U.s. DOT tire 

identification 

number

*Information not required by U.s. DOT

Inner diameter 

in inches

section width 

in inches

Trailer 

tire

Maximum 

load rating

Tire ply 

composition 

and materials 

used

Maximum 

permissible 

inflation 

pressure

section width

• 

- This number gives the width of the tire in inches.  The larger the number, the wider the 

tire. (The markings on the example tire diagram show 4.80.  The markings on your tire may differ.)

Inner diameter

• 

- This number gives the inner diameter of the tire in inches.  This is also the rim diameter in 

inches.  (The markings on the example tire diagram show 12.  The markings on your tire may differ.)

U.S. DOT tire identification number

• 

- This begins with the letters “DOT” and indicates that the tire meets 

all federal standards.  The next two numbers or letters are the plant code where it was manufactured, and 

the last four numbers represent the week and year that the tire was built.  For example, the numbers 2107 

mean the 21st week of 2007.  Any other numbers used are marketing codes used at the manufacturer’s 

discretion.  This information is used to contact consumers if a tire defect requires a recall.

Maximum Load Rating

• 

- This number indicates the maximum load in kilograms and pounds that can 

be carried by the tire.

Code Pounds

71

761

72

783

73

805

74

827

75

853

76

882

77

908

78

937

Code Pounds

79

963

80

992

81

1,019

82

1,047

83

1,074

84

1,102

85

1,135

86

1,168

Code Pounds

87

1,201

88

1,235

89

1,279

90

1,323

91

1,356

92

1,389

93

1,433

94

1,477

Code Pounds

95

1,521

96

1,565

97

1,609

98

1,653

99

1,709

100

1,764

101

1,819

102

1,874

Code Pounds

103

1,929

104

1,984

105

2,039

106

2,094

107

2,149

108

2,205

109

2,271

110

2,337

Load Index Rating Codes

• 

Load index

- This is a measurement of how much weight each tire can support.  See chart above.  (The 

markings on the example tire diagram show 71.  The markings on your tire may differ.)  Note: You may 

not find this information on all tires because it is not required by law.