Toyo Snowprox S954 is a winter tyre made in total of 87 sizes, ranging from R16 to R16 - this particular dimension is R17, which means it fits to a 17 inch/431.8mm diameter wheel. 215/65 R17 is 30mm wider than the narrowest dimension (185) and 80mm narrower than the widest one (295). This tyre profile of 65 means the sidewall height of the tyre is 65% of the tyre width (215mm), which results in 139.75mm sidewall height. In 215/65 R17, there is only one possible speed index for Toyo Snowprox S954 - "H", which is good for speeds up to 210 km/h. In 215/65 R17, Snowprox S954 usually competes against Winterhawk 4, which is a tyre from Firestone with a rating of 83%, compared to 49% of the Toyo in question.