Owning an SUV means paying for the heavy stuff when it wears out, and a solid set of all-terrain tires is usually the first big bill. Between mounting, balancing, and tax, a good set runs you about $1100 before you even leave the shop. The trick is timing it right so you aren't paying full retail.
Prices usually dip during major holiday sales like Memorial Day or Labor Day, when local shops and online warehouses drop their margins to clear inventory. You want to line up your purchase during one of these windows, but remember that financing is just a tool to spread out the cash flow, not a discount on the rubber.
Remember that the 0% intro APR for 15 months on purchases is a deadline, not free money. If you still have a balance left on the card when those 15 months are up, interest will kick in on the remaining amount.