175/55 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 - 55 is height of the tyre, which is calculated as 55% of the tyre width (175mm), which means the sidewall height has 96.25 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 265/35 R21
(2258.49 mm), 195/70 R16
(2134.4 mm), 265/45 R21
(2425 mm), 205/45 R17
(1936.16 mm), 265/70 R16
(2442.27 mm), 205/60 R15
(1969.78 mm), 275/35 R20
(2200.69 mm).