Towing a trailer means dealing with rubber that dries out and cracks long before the tread actually wears down. We all know the sinking feeling of checking the sidewalls before the first big trip of the season and finding out we need a full set. Running a trailer isn't cheap between storage, registration, and maintenance, but skipping out on fresh tires is a gamble nobody wins on the highway. Prices for a decent set usually hover around $600, and they tend to creep up right as everyone starts dusting off their gear for spring.
When you are buying tires, always negotiate the out-the-door price including mounting, balancing, and old tire disposal before you ever mention how you are paying. A financing window is just there to help cushion the blow for the actual rubber and installation, not to fund the whole project without a plan. Let's look at how to get those tires on your rims and spread the cost out sensibly.
Remember that the introductory window is a strict deadline and not free money. If you still have a remaining balance when those 18 months are up, deferred interest or standard rates will kick in on what is left.