255/50 R18 - Best allround tyres 2025 - market overview, tests, reviews

255/50 R18 doesn't belong to the most popular dimensions for allround tyres - there are 0 tyre models available, which can be compared to 155/60 R15, 170/60 R17, 160/60 R14. Let's break down the sizing - 50 is height of the tyre, which is calculated as 50% of the tyre width (255mm), which means the sidewall height has 127.5 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 2237.44 mm, which is very similar to 255/45 R19(2237.13 mm), 255/40 R20(2236.81 mm), 235/65 R16(2236.5 mm), 215/65 R17(2234.61 mm), 285/40 R19(2232.42 mm), 235/60 R17(2242.47 mm), 205/75 R16(2242.78 mm).