245/45 R18 - Best tyres 2025 - market overview, tests, reviews

245/45 R18 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 (245mm), which means the sidewall height has 110.25 mm. The wheel diameter is R18, which means it fits to a 18 inch/457.2mm diameter wheel. The total circumference of the tyre is mm, which is very similar to 185/60 R14(1814.58 mm), 255/50 R20(2397.04 mm), 185/80 R14(2047.06 mm), 255/70 R15(2318.5 mm), 195/55 R15(1870.82 mm), 265/35 R19(2098.9 mm), 195/65 R16(2073.14 mm). You can find 245/45 R18 on 29 car models - mainly Jaguar, Mercedes-Benz, BMW, Renault, Audi.