255/45 R20 - Best all-tests tyres 2025 - market overview, tests, reviews

255/45 R20 doesn't belong to the most popular dimensions for all-tests 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 - 45 is height of the tyre, which is calculated as 45% of the tyre width (255mm), which means the sidewall height has 114.75 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 245/35 R20(2134.71 mm), 165/60 R15(1818.98 mm), 245/45 R18(2129.06 mm), 170/80 R15(2051.46 mm), 245/65 R17(2357.14 mm), 175/70 R14(1886.84 mm), 255/35 R20(2156.7 mm). You can find 255/45 R20 on 9 car models - mainly BMW, Alfa Romeo, Audi, Ford, Jeep.