You’ve managed to catch up on bills and can breathe a sigh of relief, which of course seems like a perfect time for car trouble. Before you panic and try to hide your wallet from mechanics that overcharge, check out some of the promo codes available for parts, services and tires to ensure you get the best deal for your money. Discounts and promotions from stores like Advance Auto Parts, Auto Zone and Tire Rack will allow you to get what you need without spending everything you have. You may even have some money left to get your newly serviced car washed and detailed!