Bleh! When we buy tires, we just buy the tires, go up to my dad's dealership, take off the old tires, clean the wheels, put on the new tires/stems, balance them, and mount them all by ourselfs. So we only pay for the tires. The machines are easy to use anyhoo.
And we really only deal with Bridgestone(minus my bro, who has Nittos on his Probe GT, and some other sport tires on his MX-6)...we have Bridgestone Potenzas on the RX-7 and my dad's Probe, and Terranzas on the 323(soon will get a new set) and MPV.
On my bro's '87 626, there were these crappy Hercules tires which were hilarious...they were way big(the sidewalls were like 3" tall or more), the rubber was horrible, and you could skid on them forever. They also made this high pitch squeel when pushed hard.
Tires are great.