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 175/60 R14(1776.88 mm), 245/75 R16(2431.28 mm), 175/80 R14(1996.8 mm), 255/40 R19(2157.02 mm), 185/60 R14(1814.58 mm), 255/50 R20(2397.04 mm), 185/80 R14(2047.06 mm).