I'm living in Canada so I just used this set of 4 tires during summer (April - November). The noise coming from the tread is horrible. It looks like I'm driving with winter or mud tires. The tread just dissapeared (from 10/32 to 7/32) by the first summer (from end of July to the end of November). Because I bought the tires in the States, Goodyear didn't want to guarantee the tires. I saved 265$ buying them in the States without being informed about the no guarantee thing. It was my first set of Goodyear and it's gonna be the last. Hasta la vista Goodyear!