255/30 R20 - Best tyres 2025 - market overview, tests, reviews

255/30 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 (255mm), which means the sidewall height has 76.5 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 245/75 R16(2431.28 mm), 180/55 R17(1978.58 mm), 255/40 R20(2236.81 mm), 185/60 R15(1894.38 mm), 255/55 R18(2317.55 mm), 190/50 R17(1953.44 mm), 255/70 R16(2398.29 mm). You can find 255/30 R20 on 1 car models - mainly Audi.