A fresh set of performance tires changes how your car actually drives, giving you sharper steering response and way more grip in the corners. But keeping good rubber on the road isn't cheap, and waiting until the tread is completely gone usually means paying top dollar in an emergency.
Spring safety promotions are the sweet spot for buying. Shops run deals right as the weather warms up and people start prepping for road trips. You want to time your purchase around these seasonal rebates before you even think about how you are going to pay for them.
Remember that the intro window is a deadline, not free money, and any leftover balance after 18 months will get hit with standard interest charges.