Debica Presto UHP2 is a summer tyre made in total of 48 sizes, ranging from R17 to R17 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 245/45 R18 is 40mm wider than the narrowest dimension (205) and 0mm narrower than the widest one (245). This tyre profile of 45 means the sidewall height of the tyre is 45% of the tyre width (245mm), which results in 110.25mm sidewall height. In 245/45 R18, there is only one possible speed index for Debica Presto UHP2 - "Y", which is good for speeds up to 300 km/h. In 245/45 R18, Presto UHP2 usually competes against Intensa UHP 2, which is a tyre from Sava with a rating of 73%, compared to 58% of the Debica in question.