Driving in snow comes down to having the right rubber on the road, and a good set of deep tread winter tires makes all the difference when the temperature drops. Running a car gets expensive fast between gas, insurance, and routine maintenance, so timing your big purchases matters. Late summer is the sweet spot for buying winter tires because shops are trying to clear out inventory to make room for next year's stock, meaning you can often score a quieter deal before the rush hits.
When you are ready to buy, remember that negotiating the price of the tires and figuring out how to pay for them are two separate tasks. You want to hammer out the best price on the rubber first, and only then look at your payment method to bridge the gap. A payment plan helps smooth out the hit to your bank account, but it does not magically lower the sticker price on the tires.
Remember that the 0% intro APR for 15 months on purchases and balance transfers is a hard deadline, not free money. If you still have a balance left on the Discover it® Cash Back card when those 15 months run out, interest will kick in on the remaining amount.