Continental SportContact 7 is a summer tyre made in total of 97 sizes, ranging from R18 to R18 - this particular dimension is R20, which means it fits to a 20 inch/508mm diameter wheel. 255/45 R20 is 30mm wider than the narrowest dimension (225) and 70mm narrower than the widest one (325). This tyre profile of 45 means the sidewall height of the tyre is 45% of the tyre width (255mm), which results in 114.75mm sidewall height. In 255/45 R20, there is only one possible speed index for Continental SportContact 7 - "Y", which is good for speeds up to 300 km/h. Latest test in 255/45 R20 was held by Automotorsport in 2023, where SportContact 7 received rating "Very good" and finished on the 1. place. It was tested on a Kia EV6.
Relevant tyre tests in same or similiar dimension (255/45 R20)
Automotorsport Summer tyre test 2023 255/45 R20 very good Ranked #1 of 10Emerging as the top performer in a lineup of ten strong competitors, the Continental SportContact 7 distinguished itself with its remarkable performance, clinching the first position. Achieving a final rating of 'Very good,' this tire impressed with its superior aquaplaning safety, demonstrating the highest resistance among its peers. The tire showcased a very balanced wet handling with robust understeer and demonstrated a sensitive cooperation with the ESP control system, ensuring a high level of safety. Additionally, it boasted exceedingly short braking distances on dry surfaces. However, its noteworthy understeering persisted during dry handling, and an elevated rolling noise was observed. The Continental SportContact 7 excelled specifically in the disciplines of longitudinal aquaplaning, dry braking, and objective dry handling, confirming its well-rounded capabilities and superior performance across various critical safety and performance measures.