OTR tires speed index symbols

Speed ratings were established to match the speed capability of tires with the top speed capability of the vehicles to which they are applied. Speed ratings are established in kilometers per hour and subsequently converted to miles per hour (which explains why speed ratings appear established at “unusual” mile per hour increments). Despite the tire…

OTR tires load index

OTR tires Load Index

Use the tire load index chart to see how much weight your tire can support The OTR tire load index lets you know the load–carrying capacity of a tire. In other words, it’s the amount of weight your tire can support safely. The LOAD INDEX is an international numerical code for the maximum load a…