205/45 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 - 45 is height of the tyre, which is calculated as 45% of the tyre width (205mm), which means the sidewall height has 92.25 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 R14
(1831.86 mm), 255/35 R18
(1997.11 mm), 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). You can find 205/45 R17 on 28 car models - mainly .
