what are you thoughts buying tires online(new or used) and paying the mechanic to only install
significant savings?
Installing tires is quite easy, removing the lug nuts and installing a tire the only hard part is putting the tire on the wheel.
Go to any tire shop who does tires which would be faster and cheaper to just place the tires on for you.
Or price it out at a mechanic with tires purchased and installed, and just to install and how much you can get the tires for.