A good set of all-terrain truck tires changes how your rig handles dirt, mud, and highway miles alike. But keeping them properly treaded and maintained isn't cheap, especially when you need a full set of four at once. Memorial Day is one of the best times of the year to buy because manufacturers and local shops run heavy rebate promotions to clear inventory.
Before you talk financing, negotiate the out-the-door price on the rubber, mounting, balancing, and disposal fees first. A payment plan is just a tool to spread out the cash flow, not a discount on the price tag. Lock in your best price at the counter, and then figure out how you want to pay for it.
Remember that the 0% intro window is a strict deadline, not free money. If you still carry a balance when those 18 months are up, deferred interest or standard rates can kick in fast and wipe out any savings you got from the Memorial Day rebates.