205/45 R15 - Best summer tyres 2025 - market overview, tests, reviews

205/45 R15 doesn't belong to the most popular dimensions for summer tyres - there are 1 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 (205mm), which means the sidewall height has 92.25 mm. The wheel diameter is R15, which means it fits to a 15 inch/381mm diameter wheel. The total circumference of the tyre is 1776.57 mm, which is very similar to 175/60 R14(1776.88 mm), 155/60 R15(1781.28 mm), 165/70 R13(1763.06 mm), 165/65 R14(1791.02 mm), 185/55 R14(1756.46 mm), 160/60 R15(1800.13 mm), 175/65 R13(1752.07 mm). There are multiple speed indexes available for summer tyres in 205/45 R15: V(240km/h). The same goes for weight indexes: 81.