Recently saved enough to change my tires to fresh michelins ps3's at great expense and suddenly my left rear tire is scraping against the car on fast dips and hard corners. Hv inspected the tires but hv been unable to detect the contact points.The workshop that installed the new tires can't figure out how to fix the problem and insist it's my suspension that hv gone soft which is rubbish since it was fine before I changed the tyres and they are the same size.I'm looking for a good shop around glenmarie/subang area that would hv expertise in fixing this and would be grateful for any kind suggestions and recommendations of good tire shops or workshops. Thanks in advance folks.