Temperature grades are an indication of a tyre's resistance to heat. Sustained high temperature (for example, driving long distances in the hot Arabian weather), can cause a tyre to deteriorate, leading to an increased chance of a blowout or tread separation.From highest to lowest, a tyre's resistance to heat is graded as “A”, “B”, or “C”. As per Gulf Standards Organization and EMSA, The temperature grade of a vehicles tyre sold in the Gulf region must be “A” or “B”.