are those kumho ecsta supra 712's?!? Like a month ago that same thing happened to my rear passenger side tire!! And now my front passenger side tire has huge bulging out of the sidewall. I think these tires are shotty.. when did you purchase them?

 

I got them the summer of last year. Only had about 6 months worth of driving with them. I doubt I'll go with them again, I had some rainy day issues with them too. Only thing I like is they are fairly cheap considering the tread lines look pretty agressive.