225/40 R17 - Best tyres 2025 - market overview, tests, reviews

225/40 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 (225mm), which means the sidewall height has 90 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 225/55 R17(2134.08 mm), 295/35 R21(2324.46 mm), 225/65 R17(2275.46 mm), 315/35 R20(2288.65 mm), 235/40 R18(2026.96 mm), 235/50 R19(2254.41 mm), 235/65 R16(2236.5 mm).