225/40 R16 - Best tyres 2025 - market overview, tests, reviews

225/40 R16 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 R16, which means it fits to a 16 inch/406.4mm diameter wheel. The total circumference of the tyre is mm, which is very similar to 205/80 R16(2307.19 mm), 275/40 R22(2446.67 mm), 215/50 R17(2031.98 mm), 275/65 R17(2479.66 mm), 215/65 R16(2154.82 mm), 285/35 R19(2142.88 mm), 225/35 R18(1931.14 mm).