Do you need a mechanics license to install car tires as a business?

Licencing for a mechanic is often a state or local requirement and may differ in different places. It is best to check with local authorities before deciding whether or not a licence is required. Simply changing and installing tires is not a complicated process, but when you start doing work on alignment, steering and suspension which is often also done in a tire shop, the issue starts getting more complicated, so you have to be very clear in the kind of service you're going to provide.