Falken Azenis FK520 is a summer tyre made in total of 115 sizes, ranging from R17 to R17 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 255/40 R18 is 50mm wider than the narrowest dimension (205) and 70mm narrower than the widest one (325). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (255mm), which results in 102mm sidewall height. In 255/40 R18, there is only one possible speed index for Falken Azenis FK520 - "Y", which is good for speeds up to 300 km/h.
Relevant tyre tests in same or similiar dimension (255/40 R18)
Autobild Summer tyre test 2025 255/55 R18 exemplary Ranked #2 of 10The Falken Azenis FK520 impressively secured the 2nd position among 10 competitors, earning an "Exemplary" final rating. This tyre showcased a convincing performance on both asphalt and off-road, highlighted by its refreshingly dynamic handling. It excelled with short braking distances on wet and dry surfaces and delivered a low rolling resistance. Additionally, it was unrivaled in comfort, handling on gravel, exterior noise, wet braking, and wet circle cornering.
Automotorsport Summer tyre test 2023 255/45 R20 very good Ranked #7 of 10Securing the 7th position out of 10 competitors, the Falken Azenis FK520 garnered a final rating of "Very good." Testers highlighted its impressive deceleration and decent cornering grip on wet surfaces, coupled with an active, safe handling when dry. Inside the vehicle, the tire was noted for being quiet and comfortable, enhancing the overall driving experience. However, it was pointed out that the tire exhibited a somewhat sluggish steering response. Additionally, its wet handling was marked by some indifferences, showing a less balanced performance, and it struggled with longer braking distances on dry roads. A standout achievement for the tire was its exceptional performance in dry handling, distinguishing itself as the best in this discipline among its competitors.