Semperit Master-Grip 2 is a winter tyre made in total of 54 sizes, ranging from R13 to R13 - this particular dimension is R13, which means it fits to a 13 inch/330.2mm diameter wheel. This tyre profile of 80 means the sidewall height of the tyre is 80% of the tyre width (145mm), which results in 116mm sidewall height. In 145/80 R13, there is only one possible speed index for Semperit Master-Grip 2 - "T", which is good for speeds up to 190 km/h. In 145/80 R13, Master-Grip 2 usually competes against Polaris 5, which is a tyre from Barum with a rating of 72%, compared to 43% of the Semperit in question.