195/50 R18 - Best summer tyres 2025 - market overview, tests, reviews

195/50 R18 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 - 50 is height of the tyre, which is calculated as 50% of the tyre width (195mm), which means the sidewall height has 97.5 mm. The wheel diameter is R18, which means it fits to a 18 inch/457.2mm diameter wheel. The total circumference of the tyre is 2048.95 mm, which is very similar to 245/45 R17(2049.26 mm), 205/60 R16(2049.58 mm), 200/55 R17(2047.69 mm), 185/80 R14(2047.06 mm), 170/80 R15(2051.46 mm), 245/40 R18(2052.09 mm), 225/60 R15(2045.18 mm).