Free replacement for cracking Michalen Tires

On my ms starcross tire the side knobs started
cracking and one even came off on th side on the
3rd ride. I took it back to the shop where I got
it and they gave me a new one. They said that
michalin made a bad bach of tires and are replacing
the defective tires . If any of you have had this
happen tack it back and see if they give you a new tire