Matador MP47 Hectorra 3 is a summer tyre made in total of 122 sizes, ranging from R13 to R13 - this particular dimension is R20, which means it fits to a 20 inch/508mm diameter wheel. 245/35 R20 is 100mm wider than the narrowest dimension (145) and 10mm narrower than the widest one (255). This tyre profile of 35 means the sidewall height of the tyre is 35% of the tyre width (245mm), which results in 85.75mm sidewall height. In 245/35 R20, there is only one possible speed index for Matador MP47 Hectorra 3 - "Y", which is good for speeds up to 300 km/h. In 245/35 R20, MP47 Hectorra 3 usually competes against Speed-Life 3, which is a tyre from Semperit with a rating of 47%, compared to 39% of the Matador in question.