Probabably too many mods close together to really narrow it down, but it seems to have added 1-2 mpg. Probably closer to 2mpg. Rolling seems much better as well.
Wet tracktion is better than I expected. Road noise has never bothered me so I am the wrong person to ask on that. It does not seem louded than before, but my hatchback has alot of road noise regardless of the tires. handling much much better. Tires both were inflated at 44 psi and man these defenders are great! I am a pretty agressive driver on turns and they are much better than I expected.
Sorry for not having any tests ging along with it. I have a 5 month old son who gets most of time right now.
