In my earlier years I built race cars and have sold literally thousands and thousands of tires. I have driven race cars, cars and trucks for about 48 years and owned about 75 street cars, so I know a little bit about tires. I run 36 psi all around because we have smooth roads in TN and I want MPG. I also have a lot of experience with Michelin street tires and know they have always given me superior life. In 5k miles I can't visually detect any wear, so since I drive about that many miles a year they may have to be replaced for age before they wear out, but that is yet to be determined. The other factor is the locked in rear camber, which may wear the inner edges of the rears, but to date it doesn't show. If they wear since I have four equal tires I can rotate them. This isn't a high performance race car running on the edge, I haven't shot them with my temp gun to verify that the centers are the same reading as the shoulders, but frankly I don't give a damn what it is.
Now if you are in rough roads, areas of a lot of rain causing slippery conditions, ice, snow, etc., don't do this without doing some serious tests, even if it is nothing more than running through a water puddle and looking at the tire patch in the wet, that will get you close.
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