270/65 R18 - Best allround tyres 2025 - market overview, tests, reviews

270/65 R18 doesn't belong to the most popular dimensions for allround 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 - 65 is height of the tyre, which is calculated as 65% of the tyre width (270mm), which means the sidewall height has 175.5 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 285/40 R20(2312.21 mm), 225/45 R17(1992.71 mm), 295/25 R20(2059.31 mm), 225/55 R18(2213.88 mm), 295/40 R20(2337.34 mm), 225/70 R15(2186.55 mm), 315/40 R21(2467.41 mm).