335/30 R20 doesn't belong to the most popular dimensions for winter tyres - there are 2 tyre models available, which can be compared to
155/60 R15,
170/60 R17,
160/60 R14. Let's break down the sizing - 30 is height of the tyre, which is calculated as 30% of the tyre width (335mm), which means the sidewall height has 100.5 mm. The wheel diameter is R20, which means it fits to a 20 inch/508mm diameter wheel. The total circumference of the tyre is 2227.39 mm, which is very similar to 205/55 R19
(2224.56 mm), 285/35 R20
(2222.68 mm), 285/40 R19
(2232.42 mm), 215/70 R16
(2222.36 mm), 215/65 R17
(2234.61 mm), 235/65 R16
(2236.5 mm), 255/40 R20
(2236.81 mm). There are multiple speed indexes available for winter tyres in 335/30 R20: W
(270km/h). The same goes for weight indexes: 104, 108.
