345/30 R20 - Best winter tyres 2025 - market overview, tests, reviews

345/30 R20 doesn't belong to the most popular dimensions for winter tyres - there are 0 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 (345mm), which means the sidewall height has 103.5 mm. The wheel diameter is R20, which means it fits to a 20 inch/508mm diameter wheel. The total circumference of the tyre is 2246.24 mm, which is very similar to 295/35 R20(2244.67 mm), 235/55 R18(2248.44 mm), 205/75 R16(2242.78 mm), 235/60 R17(2242.47 mm), 235/50 R19(2254.41 mm), 265/30 R22(2255.04 mm), 255/45 R19(2237.13 mm).