When no one had heard of them, the first set was purchased for the Audi A6. Since it was Michelin, I took it at my own risk, and the wheels did not dissapoint! Nokian was the only option up until that point. Only Nokian and only on spikes are allowed during the winter since it is safe for spikes to float on the pavement. However, all stickies are left on the sidelines along the roadway and in the snowdrifts. therefore Michelin. The initial set was sold along with the vehicle. An acquaintance rides and is ecstatic with the vehicle and tires). They were therefore frightened by the soft sidewall, which is why they are not afraid of powerful direct hits! What else is required? I put 12,000 kilometers on it on our roads, the tread did not wear down (maybe, but it is not noticeable to the eye), and there are no hernias. They drove intoxicated where they wouldn't have considered sober in a friend's village. Sport mode is pointless and detracts. I chose the somewhat more expensive second one with the XL index (reinforced, rigid sidewall). The French have created something just for individuals who are searching for wells with open hatches and hitting the walls quickly! When in sport modes, the ride comfort is perfect! The highly comfortable ride for a super fussy ride has been reduced to just comfortable due to the hard sidewall, but anyone who has driven with and without the XL index will understand why. Dimensions remain same at 235/45 R17. Wishing everyone on the road luck!