Suzuki 2010 sx4 AWD cross over Tires

Decided to give these a try based on price point instead of going with the bridgestones I normally and wow was I impressed. Looks like laufenn/hankook really stepped up the game with this tire in terms of value for money. Really balanced wet and dry performance and I've yet to actually find the limits to these tires.

I live in the hill country I do 500miles every week from which 90% country driving. Most of the tires I had all made a squealing noise in the corners.. and there are a lot of corners here in the hills.. These tires I only heard them ones.. Not sure what that means. But I like it..

However!!! Not sure what I did wrong but the just vanished real quick.. I mean I did only 19K miles. and I have about 3/4mm left Before they become illegal to drive.. I paid $900 including fitting balancing and alignment.. Pretty heavy if I have to get new tires every 6 months Bummer..
Not sure if I buy them again, would have if I was a billionaire,.... unfortunately thats not the case.

Having said that i do the the occasional off road.. Nothing to serious just lose gravel.. That might have killed them? off?..