Nokian Powerproof 1 is a summer tyre made in total of 54 sizes, ranging from R17 to R17 - this particular dimension is R19, which means it fits to a 19 inch/482.6mm diameter wheel. 225/55 R19 is 20mm wider than the narrowest dimension (205) and 50mm narrower than the widest one (275). This tyre profile of 55 means the sidewall height of the tyre is 55% of the tyre width (225mm), which results in 123.75mm sidewall height. In
225/55 R19, Powerproof 1 usually competes against
Potenza Sport, which is a tyre from
Bridgestone with a rating of 87%, compared to 57% of the
Nokian in question.
Summer
