235/30 R20 - Best tyres 2025 - market overview, tests, reviews

235/30 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 - 30 is height of the tyre, which is calculated as 30% of the tyre width (235mm), which means the sidewall height has 70.5 mm. The wheel diameter is R20, which means it fits to a 20 inch/508mm diameter wheel. The total circumference of the tyre is mm, which is very similar to 165/65 R15(1870.82 mm), 245/50 R19(2285.82 mm), 175/60 R15(1856.68 mm), 255/30 R19(1996.8 mm), 180/55 R17(1978.58 mm), 255/40 R20(2236.81 mm), 185/60 R15(1894.38 mm).