255/40 R17 - Best tyres 2025 - market overview, tests, reviews
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255/40 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 - 40 is height of the tyre, which is calculated as 40% of the tyre width (255mm), which means the sidewall height has 102 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 235/55 R18(2248.44 mm), 235/65 R18(2396.09 mm), 155/80 R13(1816.47 mm), 245/35 R21(2214.51 mm), 165/65 R13(1711.23 mm), 245/45 R19(2208.85 mm), 175/55 R15(1801.7 mm). You can find 255/40 R17 on 1 car models - mainly Audi.
