Toyo Observe S944 is a winter tyre made in total of 67 sizes, ranging from R14 to R14 - this particular dimension is R17, which means it fits to a 17 inch/431.8mm diameter wheel. 205/55 R17 is 30mm wider than the narrowest dimension (175) and 20mm narrower than the widest one (225). This tyre profile of 55 means the sidewall height of the tyre is 55% of the tyre width (205mm), which results in 112.75mm sidewall height. In
205/55 R17, Observe S944 usually competes against
MP93 Nordicca, which is a tyre from
Matador with a rating of 50%, compared to 67% of the
Toyo in question.