My G8 came with Hercules Raptis R-T5 245/40ZR19 tires. Some people hasnt ever heard of these tires. but anyway when i was replacing the front rotors i noticed the drivers side front has a bulge on the sidewall. Not knowing how old these tires are, they are not brand new but they also have plenty of tread where they dont need replaced. So i thought about getting a good used tire of the same brand so it matches and just replace the detect tire. Problem is that this tire is hard to come by. The only place i can find one is on ebay. A new one $143. only used one i can find is a 245/45-19 which would be 1" taller. The other plan is to buy 2 new wide tires of a different brand (265/35-19 or 255/40-19) and stick on the rear and replace the bulged tire with the back. thoughts?