245/40 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 - 40 is height of the tyre, which is calculated as 40% of the tyre width (245mm), which means the sidewall height has 98 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 R14
(1720.34 mm), 245/40 R17
(1972.29 mm), 165/65 R14
(1791.02 mm), 245/50 R18
(2206.03 mm), 175/60 R14
(1776.88 mm), 245/75 R16
(2431.28 mm), 175/80 R14
(1996.8 mm). You can find 245/40 R20 on 14 car models - mainly .
