225/55 R18 - Best tyres 2025 - market overview, tests, reviews

225/55 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 - 55 is height of the tyre, which is calculated as 55% of the tyre width (225mm), which means the sidewall height has 123.75 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 245/45 R17(2049.26 mm), 165/80 R13(1866.73 mm), 245/60 R18(2359.96 mm), 175/65 R15(1911.66 mm), 255/35 R19(2076.91 mm), 185/50 R16(1857.94 mm), 255/45 R18(2157.33 mm). You can find 225/55 R18 on 24 car models - mainly Peugeot, CITROËN, Jeep, Mitsubishi, Audi.