215/50 R18 - Best tyres 2025 - market overview, tests, reviews

215/50 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 - 50 is height of the tyre, which is calculated as 50% of the tyre width (215mm), which means the sidewall height has 107.5 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 175/60 R15(1856.68 mm), 255/30 R19(1996.8 mm), 180/55 R17(1978.58 mm), 255/40 R20(2236.81 mm), 185/60 R15(1894.38 mm), 255/55 R18(2317.55 mm), 190/50 R17(1953.44 mm).