I just bought my EN, but I've run the PS4S on my last 2 cars and they're an absolutely fantastic summer tire with great grip in wet and dry. But I've also never gotten more than 15-16k miles on a set of them. What has helped the sting of that is that Michelin sells the tires with a 30,000 mile warranty on them, and if you hit under 4/10" tread depth before that they will pro-rate your next set by the amount of mileage you didn't get.
To register your tires for warranty, you just need to go to https://www.tireregistration.com/ and give them the DOT Codes from your tires: [https://www.discounttire.com/learn/dot-tire-id](https://www.discounttire.com/learn/

