155/90 R18 - Best winter tyres 2025 - market overview, tests, reviews

155/90 R18 doesn't belong to the most popular dimensions for winter 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 - 90 is height of the tyre, which is calculated as 90% of the tyre width (155mm), which means the sidewall height has 139.5 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 2312.84 mm, which is very similar to 285/40 R20(2312.21 mm), 295/30 R22(2311.58 mm), 235/70 R16(2310.33 mm), 235/65 R17(2316.3 mm), 255/40 R21(2316.61 mm), 255/45 R20(2316.92 mm), 255/50 R19(2317.24 mm).