Bridgestone Blizzak W810 is a winter tyre made in total of 44 sizes, ranging from R14 to R14 - this particular dimension is R16, which means it fits to a 16 inch/406.4mm diameter wheel. 225/65 R16 is 50mm wider than the narrowest dimension (175) and -10mm narrower than the widest one (215). This tyre profile of 65 means the sidewall height of the tyre is 65% of the tyre width (225mm), which results in 146.25mm sidewall height. In 225/65 R16, there is only one possible speed index for Bridgestone Blizzak W810 - "R", which is good for speeds up to 170 km/h. In 225/65 R16, Blizzak W810 usually competes against VanContact Winter, which is a tyre from Continental with a rating of 0%, compared to 0% of the Bridgestone in question.