235/65 R18 - Best tyres 2025 - market overview, tests, reviews

235/65 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 - 65 is height of the tyre, which is calculated as 65% of the tyre width (235mm), which means the sidewall height has 152.75 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 235/55 R20(2408.03 mm), 235/85 R16(2531.81 mm), 160/60 R15(1800.13 mm), 245/40 R19(2131.88 mm), 165/65 R15(1870.82 mm), 245/50 R19(2285.82 mm), 175/60 R15(1856.68 mm).