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Trying to work out the speed and load rating of tyres can be quite confusing but using the chart below, we’ve made it very simple for you to work out. The load rating is always in numbers and the weight shown is per tyre, so you will need to add up all four tyres load rating to get the complete weight limit for the tractor. The speed rating is shown with letters and shows the maximum speed recommended for this tyre when the tyre is at nominal pressure.

 

 

Load Load Load Load Load Load Load Load   Speed Speed
Index Kg Index Kg Index Kg Index Kg   Symbol KM/h
125 1650 139 2430 153 3650 167 5450 A1 5
126 1700 140 2500 154 3750 168 5600 A2 10
127 1750 141 2575 155 3875 169 5800 A3 15
128 1800 142 2650 156 4000 170 6000 A4 20
129 1850 143 2725 157 4125 171 6150 A5 25
130 1900 144 2800 158 4250 172 6300 A6 30
131 1950 145 2900 159 4375 173 6500 A7 35
132 2000 146 3000 160 4500 174 6700 A8 40
133 2060 147 3075 161 4625 175 6900 B 50
134 2120 148 3150 162 4750 176 7100 C 60
135 2180 149 3250 163 4875 177 7300 D 65
136 2240 150 3350 164 5000 178 7500 E 70
137 2300 151 3450 165 5150 179 7750 F 80
138 2360 152 3550 166 5300 180 8000 G 90