11. Tire Store
Score: 2 points;
Tire store is the only business on our list that has only been mentioned in one source article. Still, since several other sources point out that selling spare car parts is one of the most profitable retail niches, we have decided to add it. In addition to the profitability of the tire market, this is also one of the simplest businesses you can start. You can sell tires online and send them to your customers, although shipping heavy tires from one coast to the other or overseas can be quite expensive. If you decide to open a location-based tire store, try adding a few extra services to your offer, like patching or changing wheels.