Fulda Kristall Control HP2 is a winter tyre made in total of 51 sizes, ranging from R15 to R15 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 245/40 R18 is 50mm wider than the narrowest dimension (195) and 10mm narrower than the widest one (255). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (245mm), which results in 98mm sidewall height. In 245/40 R18, there is only one possible speed index for Fulda Kristall Control HP2 - "V", which is good for speeds up to 240 km/h. In 245/40 R18, Kristall Control HP2 usually competes against Speed-Grip 3, which is a tyre from Semperit with a rating of 80%, compared to 76% of the Fulda in question.