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 225/65 R16(2195.66 mm), 315/30 R22(2349.28 mm), 235/40 R17(1947.16 mm), 235/50 R18(2174.61 mm), 235/60 R18(2322.27 mm), 155/65 R13(1670.38 mm), 245/35 R18(1975.12 mm).