255/45 R18 - Best tyres 2025 - market overview, tests, reviews
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255/45 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 (255mm), which means the sidewall height has 114.75 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 225/40 R19(2081.62 mm), 295/25 R20(2059.31 mm), 225/55 R17(2134.08 mm), 295/40 R20(2337.34 mm), 225/65 R17(2275.46 mm), 315/40 R21(2467.41 mm), 235/40 R18(2026.96 mm). You can find 255/45 R18 on 9 car models - mainly Audi, Bentley, Mercedes-Benz, Aston Martin, Cadillac.
