205/60 R18 doesn't belong to the most popular dimensions for winter tyres - there are tyre models available, which can be compared to
325/30 R21,
155/60 R15,
155/65 R13. Let's break down the sizing - 60 is height of the tyre, which is calculated as 60% of the tyre width (205mm), which means the sidewall height has 123 mm. The wheel diameter is R18, which means it fits to a 18 inch/457.2mm diameter wheel. The total circumference of the tyre is mm, which is very similar to 265/35 R18
(2019.1 mm), 195/65 R16
(2073.14 mm), 265/40 R21
(2341.74 mm), 205/40 R17
(1871.76 mm), 265/65 R17
(2438.82 mm), 205/55 R16
(1985.17 mm), 275/30 R21
(2194.09 mm).
