255/45 R20 - Best tyres 2026 - market overview, tests, reviews

255/45 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 - 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 195/65 R14(1913.54 mm), 265/40 R20(2261.95 mm), 200/55 R17(2047.69 mm), 265/60 R18(2435.36 mm), 205/50 R17(2000.57 mm), 275/30 R20(2114.29 mm), 205/65 R16(2113.98 mm). You can find 255/45 R20 on 9 car models - mainly BMW, Alfa Romeo, Audi, Ford, Jeep.