Just purchase two as I had to replace a defective tire that Goodyear would not support. Even though it cost me more to purchase a second tire, I refuse to support a company that does not put the customer first.
Anyway I was immediately impressed with these Michelin's. I put the 2 on the front axle so that I could get a better handle on the new tires. Road noise was greatly improved as well as ride comfort. The Regal Turbo comes with 19 tires with minimal sidewalls. While the previous tires offered reasonable high speed cornering ability, the Michelin's really shine. While not a speed demon, I like to drive a Jr. version of my experiences on the Autobahn. It is not uncommon for a vehicle to pass me on the straight sections of road but in all cases they get dusted on the curved sections of the road. I love the feeling of being locked in on the track I have chosen. These Michelin's are significantly better all around than the Goodyears. The only problem is that I can't justify purchasing two additional Pilots at this time.
I am also very impressed with the TireRack. I received these tires the next day morning after ordering them. Don't know how they pulled that off. Great job.