Barum Polaris 5 is a winter tyre made in total of 74 sizes, ranging from R13 to R13 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 225/45 R18 is 90mm wider than the narrowest dimension (135) and 30mm narrower than the widest one (255). This tyre profile of 45 means the sidewall height of the tyre is 45% of the tyre width (225mm), which results in 101.25mm sidewall height. In 225/45 R18, there is only one possible speed index for Barum Polaris 5 - "V", which is good for speeds up to 240 km/h. Latest test in 225/45 R18 was held by Autobild in 2023, where Polaris 5 received rating "Satisfactory" and finished on the 9. place. It was tested on a BMW 3.
Relevant tyre tests in same or similiar dimension (225/45 R18)
Autobild Winter tyre test 2023 225/45 R18 satisfactory Ranked #9 of 20Securing the 9th position among 20 competitors, the Barum Polaris 5 tire demonstrated a commendable performance, ultimately receiving a final rating of 'Satisfactory.' This affordable third-tier brand impressed with its superior snow performance and dynamic dry handling, alongside a promising high mileage potential. Despite these strong points, the tire displayed a propensity for understeer on wet surfaces, indicating an area for improvement in its design. This balanced performance profile underscores its value proposition for consumers seeking reliable winter tire capabilities without breaking the bank.