Have used c and z before and thought that it was a good place to have my tire needs done at ,bought 4 new tires for my wife's car ,was done quickly, month or 2 later I noticed that one tire was mounted backwards took car back to have it redone and owned said it's ok not going to hurt anything when I told him that I didn't like that he just sorta made it certain that he wasn't going to make it right . When I told some guys at work one of them said that he had the same experience with them as well.