285/25 R20 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 - 25 is height of the tyre, which is calculated as 25% of the tyre width (285mm), which means the sidewall height has 71.25 mm. The wheel diameter is R20, which means it fits to a 20 inch/508mm diameter wheel. The total circumference of the tyre is mm, which is very similar to 255/40 R21
(2316.61 mm), 185/65 R14
(1872.7 mm), 255/55 R19
(2397.35 mm), 195/40 R17
(1846.63 mm), 255/70 R18
(2557.88 mm), 195/60 R14
(1852.28 mm), 265/35 R21
(2258.49 mm).
