215/45 R18 - Best tyres 2025 - market overview, tests, reviews

215/45 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 (215mm), which means the sidewall height has 96.75 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 185/80 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), 265/45 R18(2185.61 mm), 205/40 R17(1871.76 mm).