180/55 R17 doesn't belong to the most popular dimensions for winter tyres - there are 23 tyre models available, which can be compared to
155/70 R13,
195/60 R15,
185/55 R14. Let's break down the sizing - 55 is height of the tyre, which is calculated as 55% of the tyre width (180mm), which means the sidewall height has 99 mm. The wheel diameter is R17, which means it fits to a 17 inch/431.8mm diameter wheel. The total circumference of the tyre is 1978.58 mm, which is very similar to 215/40 R18
(1976.69 mm), 245/35 R18
(1975.12 mm), 195/70 R14
(1974.81 mm), 185/60 R16
(1974.18 mm), 225/50 R16
(1983.6 mm), 245/40 R17
(1972.29 mm), 205/55 R16
(1985.17 mm). There are multiple speed indexes available for winter tyres in 180/55 R17: -
(km/h), H
(210km/h), T
(190km/h), V
(240km/h), W
(270km/h). The same goes for weight indexes: 73.
