2001 Chrysler Sebring Tires rubbing struts

I had my front struts replaced a while back and every since it has been making a random popping noise at low speeds when going over small bumps, and now the tires are rubbing on the strut at the bottom spring seat. I've noticed that I can't even squeeze a finger between the tires and the bottom spring seat on all four wheels. Is this normal clearance? Is it possible that they used the wrong struts as replacements? Thank you.