245/70 R17 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 - 70 is height of the tyre, which is calculated as 70% of the tyre width (245mm), which means the sidewall height has 171.5 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 mm, which is very similar to 265/35 R18
(2019.1 mm), 195/65 R15
(1993.34 mm), 265/40 R21
(2341.74 mm), 200/60 R17
(2110.52 mm), 265/65 R17
(2438.82 mm), 205/55 R15
(1905.38 mm), 275/30 R21
(2194.09 mm).
