245/75 R17 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 - 75 is height of the tyre, which is calculated as 75% of the tyre width (245mm), which means the sidewall height has 183.75 mm. The wheel diameter is R17, which means it fits to a 17 inch/431.8mm diameter wheel. The total circumference of the tyre is mm, which is very similar to 175/65 R15
(1911.66 mm), 255/35 R18
(1997.11 mm), 185/50 R16
(1857.94 mm), 255/45 R17
(2077.54 mm), 185/65 R15
(1952.5 mm), 255/55 R20
(2477.15 mm), 195/45 R15
(1748.3 mm).
