Rears do wear slower, mostly on front engined cars, since cornering causes the wear direction to change,you also have the added wear of the tire biting in on acceleration?I'm having a laugh over this 'tires' thread:
http://www.neogaf.com/forum/showthread.php?t=1301187
One GAFer doesn't understand tires. The other doesn't get oil. Another one is like "rear tires wear slower than front".
*goes to look at thread to see if lines got crossed somewhere *