235/55 R20 - Best tyres 2025 - market overview, tests, reviews

235/55 R20 doesn't belong to the most popular dimensions for 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 - 55 is height of the tyre, which is calculated as 55% of the tyre width (235mm), which means the sidewall height has 129.25 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 165/70 R14(1842.86 mm), 245/55 R17(2203.2 mm), 175/65 R14(1831.86 mm), 255/35 R18(1997.11 mm), 180/65 R16(2011.88 mm), 255/45 R17(2077.54 mm), 185/65 R14(1872.7 mm).