Fortnite Off-Road Tire locations: How to get Off-Road Tires explained
Off-Road Tires are an item which you can find in matches following their debut part way through Season 6.
As with most items, there seems to be a chance it can appear across the map - but there are places where they will spawn more often than others.
Specifically, you should head to gas stations, where it's possible they are waiting inside the garage-area.
Not every gas station has one of these, and even if they do, it's not guaranteed to spawn there - but it's worth paying a visit if you are close by.