245/60 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 - 60 is height of the tyre, which is calculated as 60% of the tyre width (245mm), which means the sidewall height has 147 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 180/65 R16
(2011.88 mm), 255/45 R17
(2077.54 mm), 185/65 R14
(1872.7 mm), 255/55 R20
(2477.15 mm), 195/40 R17
(1846.63 mm), 265/30 R19
(2015.65 mm), 195/60 R14
(1852.28 mm).
