Toyo Observe S944 is a winter tyre made in total of 66 sizes, ranging from R14 to R14 - this particular dimension is R15, which means it fits to a 15 inch/381mm diameter wheel. This tyre profile of 65 means the sidewall height of the tyre is 65% of the tyre width (175mm), which results in 113.75mm sidewall height. In
175/65 R15, Observe S944 usually competes against
MP93 Nordicca, which is a tyre from
Matador with a rating of 40%, compared to 51% of the
Toyo in question.