Nokian WR A4 225/40 R18

Nokian WR A4 is a winter tyre made in total of 59 sizes, ranging from R16 to R16 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 225/40 R18 is 20mm wider than the narrowest dimension (205) and 20mm narrower than the widest one (245). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (225mm), which results in 90mm sidewall height. In 225/40 R18, WR A4 usually competes against ContiWinterContact TS 850P, which is a tyre from Continental with a rating of 0%, compared to 0% of the Nokian in question. Latest test in 225/40 R18 was held by Sportscars in 2017, where WR A4 received rating "Satisfactory" and finished on the 9. place. It was tested on a .