245/45 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 - 45 is height of the tyre, which is calculated as 45% of the tyre width (245mm), which means the sidewall height has 110.25 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 160/60 R18
(2039.52 mm), 245/40 R20
(2211.68 mm), 165/70 R14
(1842.86 mm), 245/55 R17
(2203.2 mm), 175/65 R14
(1831.86 mm), 255/35 R18
(1997.11 mm), 180/65 R16
(2011.88 mm). You can find 245/45 R20 on 16 car models - mainly .
