Tires
Race Director
Joined: Oct 2012
Posts: 17,383
Likes: 6,527
From: Melbourne, FL
Goodyears = BOO!
Michelin = YAY!
Runflats = Meh
I've got Pilot Super Sports on my GS, non runflat. I carry a can of fix a flat, a 12v compressor, and a tire plug kit. Works better than a runflat will, and doesn't have the performance disadvantages of the runflat. Can't beat it, and it all fits in one of the cargo boxes in the back.
Michelin = YAY!
Runflats = Meh
I've got Pilot Super Sports on my GS, non runflat. I carry a can of fix a flat, a 12v compressor, and a tire plug kit. Works better than a runflat will, and doesn't have the performance disadvantages of the runflat. Can't beat it, and it all fits in one of the cargo boxes in the back.
Team Owner
Joined: Sep 2000
Posts: 25,019
Likes: 2,712
From: Far NW 'burbs of Chicago
St. Jude Donor '13
Our club has several people running these tires and they all seem happy, even a couple of guys who do a couple of autocrosses each summer.
Team Owner
Joined: Sep 1999
Posts: 41,732
Likes: 1,718
From: Springfield MO
Team Owner
Joined: Sep 1999
Posts: 41,732
Likes: 1,718
From: Springfield MO
I'm now at 27,000 miles on them with equal wear across the tire, both front and rear and have 7/32"(.219") fronts and 5/32"(.156") rears.
camber at -.9 front with 0 toe and -.6 rear with 0 toe.
Melting Slicks
Joined: Jan 2004
Posts: 2,299
Likes: 387
From: Fort Worth TX
St. Jude Donor '14-'15
I purchased the Firestone Lifetime Alignment ($178) and have the car aligned after every road trip (5K to 8K miles) using my own specs. NO more than 5 degrees camber; this keeps the the tires flat on the ground instead of wearing on the inside edge. Also I don't track my car or smoke the rears.....although it may appear so judging by the wear on the rears compared to the fronts. The car is a manual and I do enjoy a spirited drive now and again. 
Le Mans Master
Joined: Oct 2005
Posts: 6,652
Likes: 2,106
From: Left Coast, San Diego
I purchased the Firestone Lifetime Alignment ($178) and have the car aligned after every road trip (5K to 8K miles) using my own specs. NO more than 5 degrees camber; this keeps the the tires flat on the ground instead of wearing on the inside edge. Also I don't track my car or smoke the rears.....although it may appear so judging by the wear on the rears compared to the fronts. The car is a manual and I do enjoy a spirited drive now and again.
Le Mans Master
Joined: Oct 2005
Posts: 6,652
Likes: 2,106
From: Left Coast, San Diego
I purchased the Firestone Lifetime Alignment ($178) and have the car aligned after every road trip (5K to 8K miles) using my own specs. NO more than 5 degrees camber; this keeps the the tires flat on the ground instead of wearing on the inside edge. Also I don't track my car or smoke the rears.....although it may appear so judging by the wear on the rears compared to the fronts. The car is a manual and I do enjoy a spirited drive now and again.
Melting Slicks
Joined: Jan 2004
Posts: 2,299
Likes: 387
From: Fort Worth TX
St. Jude Donor '14-'15
I use the same settings on my C5; Michelin A/S, OEM size now with 30K+ miles and half the rubber left. 
Pfadt numbers are the same as OEM GS specs; .8 camber is too much offset for the wider tires but will work somewhat on base C6 and C5. I went through two sets of tires and many discussions with the GM dealer on this topic. I finally gave up and went with my own numbers and after 55K miles between the two cars I can tell you they work!
Pfadt numbers are the same as OEM GS specs; .8 camber is too much offset for the wider tires but will work somewhat on base C6 and C5. I went through two sets of tires and many discussions with the GM dealer on this topic. I finally gave up and went with my own numbers and after 55K miles between the two cars I can tell you they work!
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Le Mans Master
Joined: Oct 2005
Posts: 6,652
Likes: 2,106
From: Left Coast, San Diego
I use the same settings on my C5; Michelin A/S, OEM size now with 30K+ miles and half the rubber left.
Pfadt numbers are the same as OEM GS specs; .8 camber is too much offset for the wider tires but will work somewhat on base C6 and C5. I went through two sets of tires and many discussions with the GM dealer on this topic. I finally gave up and went with my own numbers and after 55K miles between the two cars I can tell you they work!
Pfadt numbers are the same as OEM GS specs; .8 camber is too much offset for the wider tires but will work somewhat on base C6 and C5. I went through two sets of tires and many discussions with the GM dealer on this topic. I finally gave up and went with my own numbers and after 55K miles between the two cars I can tell you they work!
Melting Slicks
Joined: Jan 2004
Posts: 2,299
Likes: 387
From: Fort Worth TX
St. Jude Donor '14-'15
Team Owner
Joined: Sep 2000
Posts: 25,019
Likes: 2,712
From: Far NW 'burbs of Chicago
St. Jude Donor '13
I only mentioned them in this GS thread, because CSixDude's comments in post #9 are so far different from what I've seen.