Do i need to leave any tip for free flat tire fixing(at discount tire)? if so, how much?

No, if you bought the tire from them, it is a service they provide for free. It almost makes paying $215 per tire not so painful to the pocketbook.|||You don't tip mechanics. And this has nothing to do with marriage and divorce.|||"MARRIAGE AND DIVORCE"!!!!!!!|||Is this an inuendo? If it is, that's awesome.