215/75 R15 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 - 75 is height of the tyre, which is calculated as 75% of the tyre width (215mm), which means the sidewall height has 161.25 mm. The wheel diameter is R15, which means it fits to a 15 inch/381mm diameter wheel. The total circumference of the tyre is mm, which is very similar to 215/55 R17
(2099.53 mm), 285/30 R19
(2053.34 mm), 215/70 R16
(2222.36 mm), 285/40 R19
(2232.42 mm), 225/40 R19
(2081.62 mm), 285/65 R17
(2520.5 mm), 225/55 R17
(2134.08 mm).
