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 185/75 R16(2148.54 mm), 255/65 R17(2397.98 mm), 195/50 R16(1889.35 mm), 265/35 R18(2019.1 mm), 195/65 R15(1993.34 mm), 265/40 R21(2341.74 mm), 200/60 R17(2110.52 mm).