Pirelli P Zero Winter is a winter tyre made in total of 78 sizes, ranging from R18 to R18 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 245/40 R18 is 10mm wider than the narrowest dimension (235) and 50mm narrower than the widest one (295). 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 Pirelli P Zero Winter - "V", which is good for speeds up to 240 km/h.
Relevant tyre tests in same or similiar dimension (245/40 R18)
AUTOBILD Winter tyre test 2024 245/45 R18 satisfactory Ranked #9 of 12The Pirelli P Zero Winter tire finished in 9th place out of 12 competitors, earning a final rating of 'Satisfactory'. The tire demonstrated balanced performance with good winter suitability, strong grip, and sporty handling on wet roads, while providing low noise levels and comfortable rolling. However, it faced limitations in safety margins during aquaplaning and exhibited slightly extended braking distances.