175/80 R15 - Best summer tyres 2025 - market overview, tests, reviews

175/80 R15 doesn't belong to the most popular dimensions for summer tyres - there are 0 tyre models available, which can be compared to 155/60 R15, 170/60 R17, 160/60 R14. Let's break down the sizing - 80 is height of the tyre, which is calculated as 80% of the tyre width (175mm), which means the sidewall height has 140 mm. The wheel diameter is R15, which means it fits to a 15 inch/381mm diameter wheel. The total circumference of the tyre is 2076.59 mm, which is very similar to 255/30 R20(2076.59 mm), 255/35 R19(2076.91 mm), 255/40 R18(2077.22 mm), 255/45 R17(2077.54 mm), 305/25 R20(2075.02 mm), 215/65 R15(2075.02 mm), 195/65 R16(2073.14 mm). There are multiple speed indexes available for summer tyres in 175/80 R15: S(180km/h). The same goes for weight indexes: 90.