245/40 R20 - Best tyres 2025 - market overview, tests, reviews

245/40 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 - 40 is height of the tyre, which is calculated as 40% of the tyre width (245mm), which means the sidewall height has 98 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 205/75 R16(2242.78 mm), 275/40 R22(2446.67 mm), 215/45 R18(2044.23 mm), 275/65 R17(2479.66 mm), 215/65 R15(2075.02 mm), 285/35 R19(2142.88 mm), 215/85 R16(2425 mm). You can find 245/40 R20 on 14 car models - mainly Aston Martin, Infiniti, Maserati, ALPINA, BMW.