Toyo Observe Winter Sport 1 is a winter tyre made in total of 10 sizes, ranging from R16 to R16 - this particular dimension is R17, which means it fits to a 17 inch/431.8mm diameter wheel. 235/45 R17 is 30mm wider than the narrowest dimension (205) and 40mm narrower than the widest one (275). This tyre profile of 45 means the sidewall height of the tyre is 45% of the tyre width (235mm), which results in 105.75mm sidewall height. In
235/45 R17, Observe Winter Sport 1 usually competes against
WR Snowproof P, which is a tyre from
Nokian with a rating of 75%, compared to 74% of the
Toyo in question.
Winter
