275/55 R20 - Best tyres 2025 - market overview, tests, reviews

275/55 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 (275mm), which means the sidewall height has 151.25 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 225/60 R18(2284.57 mm), 305/30 R20(2170.84 mm), 235/35 R20(2112.72 mm), 235/50 R17(2094.81 mm), 235/60 R17(2242.47 mm), 155/65 R13(1670.38 mm), 245/30 R20(2057.74 mm).