255/30 R20 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 - 30 is height of the tyre, which is calculated as 30% of the tyre width (255mm), which means the sidewall height has 76.5 mm. The wheel diameter is R20, which means it fits to a 20 inch/508mm diameter wheel. The total circumference of the tyre is mm, which is very similar to 285/40 R22
(2471.81 mm), 225/45 R17
(1992.71 mm), 295/30 R18
(1992.4 mm), 225/55 R18
(2213.88 mm), 295/40 R21
(2417.14 mm), 225/70 R15
(2186.55 mm), 325/25 R20
(2106.44 mm). You can find 255/30 R20 on 1 car models - mainly .
