195/45 R17 doesn't belong to the most popular dimensions for summer tyres - there are 5 tyre models available, which can be compared to
155/60 R15,
170/60 R17,
160/60 R14. Let's break down the sizing - 45 is height of the tyre, which is calculated as 45% of the tyre width (195mm), which means the sidewall height has 87.75 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 1907.89 mm, which is very similar to 215/35 R18
(1909.15 mm), 205/55 R15
(1905.38 mm), 175/65 R15
(1911.66 mm), 195/65 R14
(1913.54 mm), 185/55 R16
(1916.06 mm), 215/40 R17
(1896.89 mm), 205/50 R16
(1920.77 mm). There are multiple speed indexes available for summer tyres in 195/45 R17: W
(270km/h), Y
(300km/h). The same goes for weight indexes: 81, 85.
