Pirelli P Zero Winter 2 is a winter tyre made in total of 70 sizes, ranging from R18 to R18 - this particular dimension is R23, which means it fits to a 23 inch/584.2mm diameter wheel. 295/30 R23 is 60mm wider than the narrowest dimension (235) and 0mm narrower than the widest one (295). This tyre profile of 30 means the sidewall height of the tyre is 30% of the tyre width (295mm), which results in 88.5mm sidewall height.
Winter
Winter